diff --git a/source/glest_game/graphics/renderer.cpp b/source/glest_game/graphics/renderer.cpp
index 2f484f14c..05055597b 100644
--- a/source/glest_game/graphics/renderer.cpp
+++ b/source/glest_game/graphics/renderer.cpp
@@ -24,7 +24,10 @@
 #include "opengl.h"
 #include "faction.h"
 #include "factory_repository.h"
-#include <cmath>
+
+#ifndef WIN32
+  #include <cmath>
+#endif
 
 #include "leak_dumper.h"
 
diff --git a/source/glest_game/type_instances/unit.cpp b/source/glest_game/type_instances/unit.cpp
index 45d175cb2..16a4f9b0a 100644
--- a/source/glest_game/type_instances/unit.cpp
+++ b/source/glest_game/type_instances/unit.cpp
@@ -23,7 +23,11 @@
 #include "skill_type.h"
 #include "core_data.h"
 #include "renderer.h"
-#include <cmath>
+
+#ifndef WIN32
+  #include <cmath>
+#endif
+
 #include "socket.h"
 
 #include "leak_dumper.h"