diff --git a/src/node.cc b/src/node.cc
index f3a5d5bb98..d71937a17f 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -176,7 +176,7 @@ static void Tick(void) {
   TryCatch try_catch;
 
   // Let the tick callback know that this is coming from the spinner
-  Handle<Value> argv[] = { True() };
+  Handle<Value> argv[] = { True(node_isolate) };
   cb->Call(process, ARRAY_SIZE(argv), argv);
 
   if (try_catch.HasCaught()) {
@@ -2078,9 +2078,9 @@ static Handle<Boolean> EnvDeleter(Local<String> property,
   HandleScope scope;
 #ifdef __POSIX__
   String::Utf8Value key(property);
-  if (!getenv(*key)) return False();
+  if (!getenv(*key)) return False(node_isolate);
   unsetenv(*key); // can't check return value, it's void on some platforms
-  return True();
+  return True(node_isolate);
 #else
   String::Value key(property);
   WCHAR* key_ptr = reinterpret_cast<WCHAR*>(*key);
@@ -2091,7 +2091,7 @@ static Handle<Boolean> EnvDeleter(Local<String> property,
               GetLastError() != ERROR_SUCCESS;
     return scope.Close(Boolean::New(rv));
   }
-  return True();
+  return True(node_isolate);
 #endif
 }
 
@@ -2146,14 +2146,14 @@ static Handle<Object> GetFeatures() {
   Local<Object> obj = Object::New();
   obj->Set(String::NewSymbol("debug"),
 #if defined(DEBUG) && DEBUG
-    True()
+    True(node_isolate)
 #else
-    False()
+    False(node_isolate)
 #endif
   );
 
-  obj->Set(String::NewSymbol("uv"), True());
-  obj->Set(String::NewSymbol("ipv6"), True()); // TODO ping libuv
+  obj->Set(String::NewSymbol("uv"), True(node_isolate));
+  obj->Set(String::NewSymbol("ipv6"), True(node_isolate)); // TODO ping libuv
   obj->Set(String::NewSymbol("tls_npn"), Boolean::New(use_npn));
   obj->Set(String::NewSymbol("tls_sni"), Boolean::New(use_sni));
   obj->Set(String::NewSymbol("tls"),
@@ -2283,22 +2283,22 @@ Handle<Object> SetupProcessObject(int argc, char *argv[]) {
 
   // -p, --print
   if (print_eval) {
-    process->Set(String::NewSymbol("_print_eval"), True());
+    process->Set(String::NewSymbol("_print_eval"), True(node_isolate));
   }
 
   // -i, --interactive
   if (force_repl) {
-    process->Set(String::NewSymbol("_forceRepl"), True());
+    process->Set(String::NewSymbol("_forceRepl"), True(node_isolate));
   }
 
   // --no-deprecation
   if (no_deprecation) {
-    process->Set(String::NewSymbol("noDeprecation"), True());
+    process->Set(String::NewSymbol("noDeprecation"), True(node_isolate));
   }
 
   // --trace-deprecation
   if (trace_deprecation) {
-    process->Set(String::NewSymbol("traceDeprecation"), True());
+    process->Set(String::NewSymbol("traceDeprecation"), True(node_isolate));
   }
 
   size_t size = 2*PATH_MAX;
@@ -2911,7 +2911,7 @@ void AtExit(void (*cb)(void* arg), void* arg) {
 
 void EmitExit(v8::Handle<v8::Object> process_l) {
   // process.emit('exit')
-  process_l->Set(String::NewSymbol("_exiting"), True());
+  process_l->Set(String::NewSymbol("_exiting"), True(node_isolate));
   Local<Value> emit_v = process_l->Get(String::New("emit"));
   assert(emit_v->IsFunction());
   Local<Function> emit = Local<Function>::Cast(emit_v);
diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index 1136a3d4c6..bdfefbf597 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -217,7 +217,7 @@ Handle<Value> SecureContext::Init(const Arguments& args) {
   SSL_CTX_sess_set_new_cb(sc->ctx_, NewSessionCallback);
 
   sc->ca_store_ = NULL;
-  return True();
+  return True(node_isolate);
 }
 
 
@@ -333,7 +333,7 @@ Handle<Value> SecureContext::SetKey(const Arguments& args) {
   }
 
   BIO *bio = LoadBIO(args[0]);
-  if (!bio) return False();
+  if (!bio) return False(node_isolate);
 
   String::Utf8Value passphrase(args[1]);
 
@@ -356,7 +356,7 @@ Handle<Value> SecureContext::SetKey(const Arguments& args) {
   EVP_PKEY_free(key);
   BIO_free(bio);
 
-  return True();
+  return True(node_isolate);
 }
 
 
@@ -437,7 +437,7 @@ Handle<Value> SecureContext::SetCert(const Arguments& args) {
   }
 
   BIO* bio = LoadBIO(args[0]);
-  if (!bio) return False();
+  if (!bio) return False(node_isolate);
 
   int rv = SSL_CTX_use_certificate_chain(sc->ctx_, bio);
 
@@ -454,7 +454,7 @@ Handle<Value> SecureContext::SetCert(const Arguments& args) {
     return ThrowException(Exception::Error(String::New(string)));
   }
 
-  return True();
+  return True(node_isolate);
 }
 
 
@@ -474,7 +474,7 @@ Handle<Value> SecureContext::AddCACert(const Arguments& args) {
   }
 
   X509* x509 = LoadX509(args[0]);
-  if (!x509) return False();
+  if (!x509) return False(node_isolate);
 
   X509_STORE_add_cert(sc->ca_store_, x509);
   SSL_CTX_add_client_CA(sc->ctx_, x509);
@@ -485,7 +485,7 @@ Handle<Value> SecureContext::AddCACert(const Arguments& args) {
     SSL_CTX_set_cert_store(sc->ctx_, sc->ca_store_);
   }
 
-  return True();
+  return True(node_isolate);
 }
 
 
@@ -499,13 +499,13 @@ Handle<Value> SecureContext::AddCRL(const Arguments& args) {
   }
 
   BIO *bio = LoadBIO(args[0]);
-  if (!bio) return False();
+  if (!bio) return False(node_isolate);
 
   X509_CRL *x509 = PEM_read_bio_X509_CRL(bio, NULL, NULL, NULL);
 
   if (x509 == NULL) {
     BIO_free(bio);
-    return False();
+    return False(node_isolate);
   }
 
   X509_STORE_add_crl(sc->ca_store_, x509);
@@ -516,7 +516,7 @@ Handle<Value> SecureContext::AddCRL(const Arguments& args) {
   BIO_free(bio);
   X509_CRL_free(x509);
 
-  return True();
+  return True(node_isolate);
 }
 
 
@@ -536,14 +536,14 @@ Handle<Value> SecureContext::AddRootCerts(const Arguments& args) {
 
       if (!BIO_write(bp, root_certs[i], strlen(root_certs[i]))) {
         BIO_free(bp);
-        return False();
+        return False(node_isolate);
       }
 
       X509 *x509 = PEM_read_bio_X509(bp, NULL, NULL, NULL);
 
       if (x509 == NULL) {
         BIO_free(bp);
-        return False();
+        return False(node_isolate);
       }
 
       X509_STORE_add_cert(root_cert_store, x509);
@@ -556,7 +556,7 @@ Handle<Value> SecureContext::AddRootCerts(const Arguments& args) {
   sc->ca_store_ = root_cert_store;
   SSL_CTX_set_cert_store(sc->ctx_, sc->ca_store_);
 
-  return True();
+  return True(node_isolate);
 }
 
 
@@ -572,7 +572,7 @@ Handle<Value> SecureContext::SetCiphers(const Arguments& args) {
   String::Utf8Value ciphers(args[0]);
   SSL_CTX_set_cipher_list(sc->ctx_, *ciphers);
 
-  return True();
+  return True(node_isolate);
 }
 
 Handle<Value> SecureContext::SetOptions(const Arguments& args) {
@@ -586,7 +586,7 @@ Handle<Value> SecureContext::SetOptions(const Arguments& args) {
 
   SSL_CTX_set_options(sc->ctx_, args[0]->IntegerValue());
 
-  return True();
+  return True(node_isolate);
 }
 
 Handle<Value> SecureContext::SetSessionIdContext(const Arguments& args) {
@@ -618,14 +618,14 @@ Handle<Value> SecureContext::SetSessionIdContext(const Arguments& args) {
     return ThrowException(Exception::TypeError(message));
   }
 
-  return True();
+  return True(node_isolate);
 }
 
 Handle<Value> SecureContext::Close(const Arguments& args) {
   HandleScope scope;
   SecureContext *sc = ObjectWrap::Unwrap<SecureContext>(args.Holder());
   sc->FreeCTXMem();
-  return False();
+  return False(node_isolate);
 }
 
 //Takes .pfx or .p12 and password in string or buffer format
@@ -702,7 +702,7 @@ Handle<Value> SecureContext::LoadPKCS12(const Arguments& args) {
     return ThrowException(Exception::Error(String::New(str)));
   }
 
-  return True();
+  return True(node_isolate);
 }
 
 
@@ -948,11 +948,11 @@ void Connection::SetShutdownFlags() {
   int flags = SSL_get_shutdown(ssl_);
 
   if (flags & SSL_SENT_SHUTDOWN) {
-    handle_->Set(String::New("sentShutdown"), True());
+    handle_->Set(String::New("sentShutdown"), True(node_isolate));
   }
 
   if (flags & SSL_RECEIVED_SHUTDOWN) {
-    handle_->Set(String::New("receivedShutdown"), True());
+    handle_->Set(String::New("receivedShutdown"), True(node_isolate));
   }
 }
 
@@ -1082,7 +1082,7 @@ int Connection::SelectNextProtoCallback_(SSL *s,
     *outlen = 8;
 
     // set status unsupported
-    p->selectedNPNProto_ = Persistent<Value>::New(False());
+    p->selectedNPNProto_ = Persistent<Value>::New(False(node_isolate));
 
     return SSL_TLSEXT_ERR_OK;
   }
@@ -1103,7 +1103,7 @@ int Connection::SelectNextProtoCallback_(SSL *s,
                              ));
       break;
     case OPENSSL_NPN_NO_OVERLAP:
-      p->selectedNPNProto_ = Persistent<Value>::New(False());
+      p->selectedNPNProto_ = Persistent<Value>::New(False(node_isolate));
       break;
     default:
       break;
@@ -1660,7 +1660,7 @@ Handle<Value> Connection::SetSession(const Arguments& args) {
     return ThrowException(Exception::Error(eStr));
   }
 
-  return True();
+  return True(node_isolate);
 }
 
 Handle<Value> Connection::LoadSession(const Arguments& args) {
@@ -1684,7 +1684,7 @@ Handle<Value> Connection::LoadSession(const Arguments& args) {
 
   ss->hello_parser_.Finish();
 
-  return True();
+  return True(node_isolate);
 }
 
 Handle<Value> Connection::IsSessionReused(const Arguments& args) {
@@ -1692,8 +1692,11 @@ Handle<Value> Connection::IsSessionReused(const Arguments& args) {
 
   Connection *ss = Connection::Unwrap(args);
 
-  if (ss->ssl_ == NULL) return False();
-  return SSL_session_reused(ss->ssl_) ? True() : False();
+  if (ss->ssl_ == NULL || SSL_session_reused(ss->ssl_) == false) {
+    return False(node_isolate);
+  }
+
+  return True(node_isolate);
 }
 
 
@@ -1724,7 +1727,7 @@ Handle<Value> Connection::Shutdown(const Arguments& args) {
 
   Connection *ss = Connection::Unwrap(args);
 
-  if (ss->ssl_ == NULL) return False();
+  if (ss->ssl_ == NULL) return False(node_isolate);
   int rv = SSL_shutdown(ss->ssl_);
   ss->HandleSSLError("SSL_shutdown", rv, kZeroIsNotAnError);
   ss->SetShutdownFlags();
@@ -1738,12 +1741,12 @@ Handle<Value> Connection::ReceivedShutdown(const Arguments& args) {
 
   Connection *ss = Connection::Unwrap(args);
 
-  if (ss->ssl_ == NULL) return False();
+  if (ss->ssl_ == NULL) return False(node_isolate);
   int r = SSL_get_shutdown(ss->ssl_);
 
-  if (r & SSL_RECEIVED_SHUTDOWN) return True();
+  if (r & SSL_RECEIVED_SHUTDOWN) return True(node_isolate);
 
-  return False();
+  return False(node_isolate);
 }
 
 
@@ -1752,8 +1755,11 @@ Handle<Value> Connection::IsInitFinished(const Arguments& args) {
 
   Connection *ss = Connection::Unwrap(args);
 
-  if (ss->ssl_ == NULL) return False();
-  return SSL_is_init_finished(ss->ssl_) ? True() : False();
+  if (ss->ssl_ == NULL || SSL_is_init_finished(ss->ssl_) == false) {
+    return False(node_isolate);
+  }
+
+  return True(node_isolate);
 }
 
 
@@ -1929,7 +1935,7 @@ Handle<Value> Connection::Close(const Arguments& args) {
     SSL_free(ss->ssl_);
     ss->ssl_ = NULL;
   }
-  return True();
+  return True(node_isolate);
 }
 
 #ifdef OPENSSL_NPN_NEGOTIATED
@@ -1945,7 +1951,7 @@ Handle<Value> Connection::GetNegotiatedProto(const Arguments& args) {
     SSL_get0_next_proto_negotiated(ss->ssl_, &npn_proto, &npn_proto_len);
 
     if (!npn_proto) {
-      return False();
+      return False(node_isolate);
     }
 
     return String::New((const char*) npn_proto, npn_proto_len);
@@ -1970,7 +1976,7 @@ Handle<Value> Connection::SetNPNProtocols(const Arguments& args) {
   }
   ss->npnProtos_ = Persistent<Object>::New(args[0]->ToObject());
 
-  return True();
+  return True(node_isolate);
 };
 #endif
 
@@ -1983,7 +1989,7 @@ Handle<Value> Connection::GetServername(const Arguments& args) {
   if (ss->is_server_ && !ss->servername_.IsEmpty()) {
     return ss->servername_;
   } else {
-    return False();
+    return False(node_isolate);
   }
 }
 
@@ -2004,7 +2010,7 @@ Handle<Value> Connection::SetSNICallback(const Arguments& args) {
   ss->sniObject_ = Persistent<Object>::New(Object::New());
   ss->sniObject_->Set(String::New("onselect"), args[0]);
 
-  return True();
+  return True(node_isolate);
 }
 #endif
 
diff --git a/src/node_http_parser.cc b/src/node_http_parser.cc
index 448136aa31..3e622eb6aa 100644
--- a/src/node_http_parser.cc
+++ b/src/node_http_parser.cc
@@ -280,9 +280,12 @@ public:
                       Integer::New(parser_.http_minor, node_isolate));
 
     message_info->Set(should_keep_alive_sym,
-        http_should_keep_alive(&parser_) ? True() : False());
+                      http_should_keep_alive(&parser_) ? True(node_isolate)
+                                                       : False(node_isolate));
 
-    message_info->Set(upgrade_sym, parser_.upgrade ? True() : False());
+    message_info->Set(upgrade_sym,
+                      parser_.upgrade ? True(node_isolate)
+                                      : False(node_isolate));
 
     Local<Value> argv[1] = { message_info };
 
diff --git a/src/node_os.cc b/src/node_os.cc
index 145ba47244..7b84c29278 100644
--- a/src/node_os.cc
+++ b/src/node_os.cc
@@ -235,8 +235,10 @@ static Handle<Value> GetInterfaceAddresses(const Arguments& args) {
     o = Object::New();
     o->Set(String::New("address"), String::New(ip));
     o->Set(String::New("family"), family);
-    o->Set(String::New("internal"), interfaces[i].is_internal ?
-	                                  True() : False());
+
+    const bool internal = interfaces[i].is_internal;
+    o->Set(String::New("internal"),
+           internal ? True(node_isolate) : False(node_isolate));
 
     ifarr->Set(ifarr->Length(), o);
   }
diff --git a/src/tcp_wrap.cc b/src/tcp_wrap.cc
index 898bf90270..3df632833e 100644
--- a/src/tcp_wrap.cc
+++ b/src/tcp_wrap.cc
@@ -350,8 +350,8 @@ void TCPWrap::AfterConnect(uv_connect_t* req, int status) {
     Integer::New(status, node_isolate),
     Local<Value>::New(node_isolate, wrap->object_),
     Local<Value>::New(node_isolate, req_wrap->object_),
-    Local<Value>::New(node_isolate, v8::True()),
-    Local<Value>::New(node_isolate, v8::True())
+    Local<Value>::New(node_isolate, v8::True(node_isolate)),
+    Local<Value>::New(node_isolate, v8::True(node_isolate))
   };
 
   MakeCallback(req_wrap->object_, oncomplete_sym, ARRAY_SIZE(argv), argv);
diff --git a/src/tty_wrap.cc b/src/tty_wrap.cc
index 7875c7dfe0..476d0ab157 100644
--- a/src/tty_wrap.cc
+++ b/src/tty_wrap.cc
@@ -118,7 +118,12 @@ Handle<Value> TTYWrap::IsTTY(const Arguments& args) {
   HandleScope scope;
   int fd = args[0]->Int32Value();
   assert(fd >= 0);
-  return uv_guess_handle(fd) == UV_TTY ? v8::True() : v8::False();
+
+  if (uv_guess_handle(fd) == UV_TTY) {
+    return v8::True(node_isolate);
+  }
+
+  return v8::False(node_isolate);
 }
 
 
diff --git a/src/udp_wrap.cc b/src/udp_wrap.cc
index 785d348a66..ac8265f11c 100644
--- a/src/udp_wrap.cc
+++ b/src/udp_wrap.cc
@@ -280,10 +280,10 @@ Handle<Value> UDPWrap::RecvStart(const Arguments& args) {
   int r = uv_udp_recv_start(&wrap->handle_, OnAlloc, OnRecv);
   if (r && uv_last_error(uv_default_loop()).code != UV_EALREADY) {
     SetErrno(uv_last_error(uv_default_loop()));
-    return False();
+    return False(node_isolate);
   }
 
-  return True();
+  return True(node_isolate);
 }