diff --git a/src/Backends/Audio/SDL2.cpp b/src/Backends/Audio/SDL2.cpp
index e056ebee..6e27e9bb 100644
--- a/src/Backends/Audio/SDL2.cpp
+++ b/src/Backends/Audio/SDL2.cpp
@@ -1,5 +1,6 @@
 #include "../Audio.h"
 
+#include <math.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>