diff --git a/src/Globals.h b/src/Globals.h
index 9959d92a9..4ee1352eb 100644
--- a/src/Globals.h
+++ b/src/Globals.h
@@ -51,6 +51,9 @@
 	
 	#define NORETURN      __declspec(noreturn)
 
+	// Use non-standard defines in <cmath>
+	#define _USE_MATH_DEFINES
+
 #elif defined(__GNUC__)
 
 	// TODO: Can GCC explicitly mark classes as abstract (no instances can be created)?
diff --git a/src/Vector3.h b/src/Vector3.h
index 937c8fdfa..1854e42e3 100644
--- a/src/Vector3.h
+++ b/src/Vector3.h
@@ -3,7 +3,6 @@
 
 
 
-#define _USE_MATH_DEFINES  // Enable non-standard math defines (MSVC)
 #include <list>
 #include <vector>