diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index b0b3ea7..ad3fe04 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -456,8 +456,8 @@
 	struct snd_info_entry *proc_regs;
 	unsigned short subsystem_vendor;
 	unsigned short subsystem_device;
-	struct semaphore reg_mutex;
-	struct semaphore page_mutex;	/* mutex for AD18xx multi-codecs and paging (2.3) */
+	struct mutex reg_mutex;
+	struct mutex page_mutex;	/* mutex for AD18xx multi-codecs and paging (2.3) */
 	unsigned short num;	/* number of codec: 0 = primary, 1 = secondary */
 	unsigned short addr;	/* physical address of codec [0-3] */
 	unsigned int id;	/* identification of codec */