diff --git a/sound/ac97_bus.c b/sound/ac97_bus.c
index 7fa37e15f1961b8c6b48834bc4886c403bcb568c..a351dd0a09c7dc0eb53daa0b2cedb9c625ba9225 100644
--- a/sound/ac97_bus.c
+++ b/sound/ac97_bus.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/device.h>
 #include <linux/string.h>
+#include <sound/ac97_codec.h>
 
 /*
  * Let drivers decide whether they want to support given codec from their