diff --git a/sound/core/sound.c b/sound/core/sound.c
index df4ab94d006e..4d28e5212611 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -121,7 +121,7 @@ void *snd_lookup_minor_data(unsigned int minor, int type)
 	struct snd_minor *mreg;
 	void *private_data;
 
-	if (minor > ARRAY_SIZE(snd_minors))
+	if (minor >= ARRAY_SIZE(snd_minors))
 		return NULL;
 	mutex_lock(&sound_mutex);
 	mreg = snd_minors[minor];
@@ -140,7 +140,7 @@ static int snd_open(struct inode *inode, struct file *file)
 	struct file_operations *old_fops;
 	int err = 0;
 
-	if (minor > ARRAY_SIZE(snd_minors))
+	if (minor >= ARRAY_SIZE(snd_minors))
 		return -ENODEV;
 	mptr = snd_minors[minor];
 	if (mptr == NULL) {
diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c
index 6b4a4bccd8fe..4023d3b406de 100644
--- a/sound/core/sound_oss.c
+++ b/sound/core/sound_oss.c
@@ -46,7 +46,7 @@ void *snd_lookup_oss_minor_data(unsigned int minor, int type)
 	struct snd_minor *mreg;
 	void *private_data;
 
-	if (minor > ARRAY_SIZE(snd_oss_minors))
+	if (minor >= ARRAY_SIZE(snd_oss_minors))
 		return NULL;
 	mutex_lock(&sound_oss_mutex);
 	mreg = snd_oss_minors[minor];