diff --git a/src/node.cc b/src/node.cc
index 66800bf300..9c6b4babb5 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -49,7 +49,12 @@
 
 using namespace v8;
 
+# ifdef __APPLE__
+# include <crt_externs.h>
+# define environ (*_NSGetEnviron())
+# else
 extern char **environ;
+# endif
 
 namespace node {
 
diff --git a/src/node_child_process.cc b/src/node_child_process.cc
index 9201a91307..347ee026a7 100644
--- a/src/node_child_process.cc
+++ b/src/node_child_process.cc
@@ -13,7 +13,12 @@
 #include <sys/wait.h>
 #endif
 
+# ifdef __APPLE__
+# include <crt_externs.h>
+# define environ (*_NSGetEnviron())
+# else
 extern char **environ;
+# endif
 
 namespace node {