diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 7b84b61a0784610fe5ff0413bdef425683b55e20..ef07a6d0dd5ff6bff1b5a3f5de51c19d166acd30 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>
 #include <linux/usb/audio-v2.h>
diff --git a/sound/usb/format.c b/sound/usb/format.c
index fcadedd94543da4bbfcff08fa45d55fd05d9f3da..b87cf87c4e7bdedd2a924d1d1c8588df76c255e7 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>
 #include <linux/usb/audio-v2.h>
diff --git a/sound/usb/helper.c b/sound/usb/helper.c
index ba7dba4d5cf253a80c006ebb2bebf4b8b6a82aad..d48d6f8f6ac9747343b6c3b7c6e5d3760464c7e4 100644
--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/usb.h>
 
 #include "usbaudio.h"
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 56b665938b1b500f153ce5a7e6589c028993d3d2..e7df1e5e3f2ecd36b60ba07944dfeac1d14ff85f 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -26,6 +26,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>
 
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index d4ced64e465bb86a73a7f5c73c8a5eb68271750e..136e5b4cf6de4fda961a9f1d61c8543d1069bd76 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>