diff --git a/include/uapi/sound/asequencer.h b/include/uapi/sound/asequencer.h
index a75e14edc957e..dbd60f48b4b01 100644
--- a/include/uapi/sound/asequencer.h
+++ b/include/uapi/sound/asequencer.h
@@ -344,10 +344,10 @@ typedef int __bitwise snd_seq_client_type_t;
 #define	KERNEL_CLIENT	((__force snd_seq_client_type_t) 2)
                         
 	/* event filter flags */
-#define SNDRV_SEQ_FILTER_BROADCAST	(1<<0)	/* accept broadcast messages */
-#define SNDRV_SEQ_FILTER_MULTICAST	(1<<1)	/* accept multicast messages */
-#define SNDRV_SEQ_FILTER_BOUNCE		(1<<2)	/* accept bounce event in error */
-#define SNDRV_SEQ_FILTER_USE_EVENT	(1<<31)	/* use event filter */
+#define SNDRV_SEQ_FILTER_BROADCAST	(1U<<0)	/* accept broadcast messages */
+#define SNDRV_SEQ_FILTER_MULTICAST	(1U<<1)	/* accept multicast messages */
+#define SNDRV_SEQ_FILTER_BOUNCE		(1U<<2)	/* accept bounce event in error */
+#define SNDRV_SEQ_FILTER_USE_EVENT	(1U<<31)	/* use event filter */
 
 struct snd_seq_client_info {
 	int client;			/* client number to inquire */