diff --git a/code/client/libmumblelink.c b/code/client/libmumblelink.c
index e2e1c42b..40d1eb1b 100644
--- a/code/client/libmumblelink.c
+++ b/code/client/libmumblelink.c
@@ -25,6 +25,9 @@
 #define uint32_t UINT32
 #else
 #include <unistd.h>
+#ifdef __sun
+#define _POSIX_C_SOURCE 199309L
+#endif
 #include <sys/mman.h>
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/code/qcommon/q_shared.h b/code/qcommon/q_shared.h
index df4d8def..56734dce 100644
--- a/code/qcommon/q_shared.h
+++ b/code/qcommon/q_shared.h
@@ -23,14 +23,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #ifndef __Q_SHARED_H
 #define __Q_SHARED_H
 
-#ifndef _BSD_SOURCE
-  #define _BSD_SOURCE
-#endif
-
-#ifndef _POSIX_C_SOURCE
-  #define _POSIX_C_SOURCE 200112L
-#endif
-
 // q_shared.h -- included first by ALL program modules.
 // A user mod should never modify this file