diff --git a/src/unix/gsocket.cpp b/src/unix/gsocket.cpp
index d417f12da8..1ea7b594e5 100644
--- a/src/unix/gsocket.cpp
+++ b/src/unix/gsocket.cpp
@@ -36,14 +36,6 @@
 #include <types.h>
 #include <netinet/in.h>
 #endif
-#ifdef __NETBSD__
-#ifndef _NETBSD_SOURCE
-#define _NETBSD_SOURCE
-#endif
-#ifndef _LIBC
-#define _LIBC
-#endif
-#endif
 #include <netdb.h>
 #include <sys/ioctl.h>