diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 630e2203b344b36a62d56f05a32788d8de637886..2bf0d77d1768020a693973e00eab12dbde70ae18 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>
 #include <linux/usb/audio-v2.h>