diff --git a/thirdparty/src/chipmunk/cpHastySpace.c b/thirdparty/src/chipmunk/cpHastySpace.c
index 7093bfc48..49de81cb7 100644
--- a/thirdparty/src/chipmunk/cpHastySpace.c
+++ b/thirdparty/src/chipmunk/cpHastySpace.c
@@ -8,7 +8,9 @@
 
 //#include <sys/param.h >
 #ifndef _WIN32
+#ifdef __MACOSX__
 #include <sys/sysctl.h>
+#endif
 #include <pthread.h>
 #else
 #ifndef WIN32_LEAN_AND_MEAN