diff --git a/src/socket.c b/src/socket.c
index a34919f8..5553d49d 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -53,9 +53,6 @@
 #include "libssh/poll.h"
 #include "libssh/session.h"
 
-#ifndef _WIN32
-extern char **environ;
-#endif
 /**
  * @internal
  *