diff --git a/src/FAudio_internal.h b/src/FAudio_internal.h
index c62385d69..d72cb37ab 100644
--- a/src/FAudio_internal.h
+++ b/src/FAudio_internal.h
@@ -32,6 +32,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <malloc.h>
 #include <math.h>
 #include <assert.h>
 #include <inttypes.h>