diff --git a/source/os/src/osMath.c b/source/os/src/osMath.c
index 9b24cce8c3670ae28edf3c99469b60b5172c5773..41c8c9257a95fb57213c33042ac7c1339295553b 100644
--- a/source/os/src/osMath.c
+++ b/source/os/src/osMath.c
@@ -15,8 +15,8 @@
 
 #define ALLOW_FORBID_FUNC
 #define _DEFAULT_SOURCE
+#include "os.h"
 #include <stdlib.h>
-#include "osDef.h"
 
 #ifdef WINDOWS
 void swapStr(char* j, char* J, int width) {