diff --git a/postproc/swscale.c b/postproc/swscale.c
index d5a788a284..a602de0076 100644
--- a/postproc/swscale.c
+++ b/postproc/swscale.c
@@ -55,6 +55,8 @@ untested special converters
 #include <assert.h>
 #ifdef HAVE_MALLOC_H
 #include <malloc.h>
+#else
+#include <stdlib.h>
 #endif
 #include "swscale.h"
 #include "../cpudetect.h"