diff --git a/libserpent/rewriter.cpp b/libserpent/rewriter.cpp
index 0ef185e3c..f73de7e9d 100644
--- a/libserpent/rewriter.cpp
+++ b/libserpent/rewriter.cpp
@@ -132,7 +132,7 @@ std::string macros[][2] = {
     },
     {
         "(sha3 $x)",
-        "(seq (set $1 $x) (sha3 (ref $1) 32))"
+        "(seq (set $1 $x) (~sha3 (ref $1) 32))"
     },
     {
         "(sha3 $mstart $msize)",
@@ -350,7 +350,7 @@ Node array_lit_transform(Node node) {
     o2.push_back(astnode("alloc", o1, node.metadata));
     std::vector<Node> o3;
     o3.push_back(astnode("set", o2, node.metadata));
-	for (unsigned i = 0; i < node.args.size(); i++) {
+    for (int i = 0; i < node.args.size(); i++) {
         // (mstore (add (get symb) i*32) v)
         std::vector<Node> o5;
         o5.push_back(token(symb, node.metadata));
diff --git a/setup.py b/setup.py
index 1016695f6..440712247 100644
--- a/setup.py
+++ b/setup.py
@@ -14,8 +14,10 @@ class build_me(build):
     def run(self):
         build.run(self)
         # if os.uname()[0] == 'Linux' and os.geteuid() == 0:
+        #     call(['sudo', 'apt-get', 'install', 'build-essential'])
+        #     call(['sudo', 'apt-get', 'install', 'g++-4.8'])
         #     call(['sudo', 'apt-get', 'install', 'cmake'])
-        #     call(['sudo', 'apt-get', 'install', 'libboost-dev'])
+        #     call(['sudo', 'apt-get', 'install', 'libboost-all-dev'])
         call(['mkdir', 'build'])
         os.chdir('build')
         call(['cmake', '..', '-DLANGUAGES=1'])
@@ -43,7 +45,7 @@ def read(fname):
 
 setup(
     name='ethereum-serpent',
-    version='1.4.6',
+    version='1.4.11',
     description='Serpent compiler',
     maintainer='Vitalik Buterin',
     maintainer_email='v@buterin.com',