diff --git a/src/node.cc b/src/node.cc
index 8c5e811d6e..d57665a9fd 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -924,7 +924,7 @@ Local<Value> UVException(Isolate* isolate,
 
 
 // Look up environment variable unless running as setuid root.
-inline bool SafeGetenv(const char* key, std::string* text) {
+bool SafeGetenv(const char* key, std::string* text) {
 #ifndef _WIN32
   // TODO(bnoordhuis) Should perhaps also check whether getauxval(AT_SECURE)
   // is non-zero on Linux.
diff --git a/src/node_internals.h b/src/node_internals.h
index 9d57becc26..52fa17a812 100644
--- a/src/node_internals.h
+++ b/src/node_internals.h
@@ -114,6 +114,8 @@ void RegisterSignalHandler(int signal,
                            bool reset_handler = false);
 #endif
 
+bool SafeGetenv(const char* key, std::string* text);
+
 template <typename T, size_t N>
 constexpr size_t arraysize(const T(&)[N]) { return N; }