diff --git a/lib/roken/roken.h.in b/lib/roken/roken.h.in
index bf0b2d37d..6c264edc1 100644
--- a/lib/roken/roken.h.in
+++ b/lib/roken/roken.h.in
@@ -1033,7 +1033,7 @@ void
 rk_qsort(void *, size_t, size_t, int (*)(const void *, const void *));
 #endif
 
-#if defined(__LINUX__) && SOCK_CLOEXEC && !defined(SOCKET_WRAPPER_REPLACE) 
+#if defined(__linux__) && SOCK_CLOEXEC && !defined(SOCKET_WRAPPER_REPLACE) 
 #undef socket
 #define socket(_fam,_type,_prot) rk_socket(_fam,_type,_prot)
 int ROKEN_LIB_FUNCTION rk_socket(int, int, int);