diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index b84bc1a..8eea0ddb 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -23,6 +23,8 @@
 #include "dm-bio-list.h"
 #include "kcopyd.h"
 
+#define DM_MSG_PREFIX "snapshots"
+
 /*
  * The percentage increment we will wake up users at
  */
@@ -117,7 +119,7 @@
 	_origins = kmalloc(ORIGIN_HASH_SIZE * sizeof(struct list_head),
 			   GFP_KERNEL);
 	if (!_origins) {
-		DMERR("Device mapper: Snapshot: unable to allocate memory");
+		DMERR("unable to allocate memory");
 		return -ENOMEM;
 	}
 
@@ -412,7 +414,7 @@
 	int blocksize;
 
 	if (argc < 4) {
-		ti->error = "dm-snapshot: requires exactly 4 arguments";
+		ti->error = "requires exactly 4 arguments";
 		r = -EINVAL;
 		goto bad1;
 	}
@@ -1127,7 +1129,7 @@
 	struct dm_dev *dev;
 
 	if (argc != 1) {
-		ti->error = "dm-origin: incorrect number of arguments";
+		ti->error = "origin: incorrect number of arguments";
 		return -EINVAL;
 	}
 
@@ -1236,7 +1238,7 @@
 
 	r = dm_register_target(&origin_target);
 	if (r < 0) {
-		DMERR("Device mapper: Origin: register failed %d\n", r);
+		DMERR("Origin target register failed %d", r);
 		goto bad1;
 	}