diff --git win/nmakehlp.c win/nmakehlp.c
index c8b39a794e..0176cb2873 100644
--- win/nmakehlp.c
+++ win/nmakehlp.c
@@ -19,7 +19,6 @@
 #pragma comment (lib, "kernel32.lib")
 #endif
 #include <stdio.h>
-#include <math.h>
 
 /*
  * This library is required for x64 builds with _some_ versions of MSVC
