diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h
index 1f23cd635957..1fe3f4f3d696 100644
--- a/include/uapi/sound/asound.h
+++ b/include/uapi/sound/asound.h
@@ -25,6 +25,9 @@
 
 #include <linux/types.h>
 
+#ifndef __KERNEL__
+#include <stdlib.h>
+#endif
 
 /*
  *  protocol version