diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c
index 368dc9c..4268744 100644
--- a/sound/core/control_compat.c
+++ b/sound/core/control_compat.c
@@ -21,6 +21,7 @@
 /* this file included from control.c */
 
 #include <linux/compat.h>
+#include <linux/slab.h>
 
 struct snd_ctl_elem_list32 {
 	u32 offset;