--- a/drivers/sound/sound_core.c
+++ b/drivers/sound/sound_core.c
@@ -174,9 +174,9 @@ static int sound_insert_unit(struct soun
 	}
 	
 	if (r == low)
-		sprintf (name_buf, "%s", name);
+		snprintf (name_buf, sizeof(name_buf), "%s", name);
 	else
-		sprintf (name_buf, "%s%d", name, (r - low) / SOUND_STEP);
+		snprintf (name_buf, sizeof(name_buf), "%s%d", name, (r - low) / SOUND_STEP);
 	s->de = devfs_register (devfs_handle, name_buf,
 				DEVFS_FL_NONE, SOUND_MAJOR, s->unit_minor,
 				S_IFCHR | mode, fops, NULL);
@@ -507,9 +507,9 @@ int soundcore_open(struct inode *inode, 
 		 *  ALSA toplevel modules for soundcards, thus we need
 		 *  load them at first.	  [Jaroslav Kysela <perex@jcu.cz>]
 		 */
-		sprintf(mod, "sound-slot-%i", unit>>4);
+		snprintf(mod, sizeof(mod), "sound-slot-%i", unit>>4);
 		request_module(mod);
-		sprintf(mod, "sound-service-%i-%i", unit>>4, chain);
+		snprintf(mod, sizeof(mod), "sound-service-%i-%i", unit>>4, chain);
 		request_module(mod);
 		spin_lock(&sound_loader_lock);
 		s = __look_for_unit(chain, unit);
