diff --git a/src/engine/platform/msm5232.cpp b/src/engine/platform/msm5232.cpp
index 74a063ba..84e8d91b 100644
--- a/src/engine/platform/msm5232.cpp
+++ b/src/engine/platform/msm5232.cpp
@@ -17,6 +17,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#define _USE_MATH_DEFINES
 #include "msm5232.h"
 #include "../engine.h"
 #include <math.h>