diff --git a/sys/dev/xen/blkback/blkback.c b/sys/dev/xen/blkback/blkback.c
index f2f26988e53..654f307cbb6 100644
--- a/sys/dev/xen/blkback/blkback.c
+++ b/sys/dev/xen/blkback/blkback.c
@@ -3852,17 +3852,17 @@ xbb_detach(device_t dev)
 	xbb_close_backend(xbb);
 
 	if (xbb->dev_mode != NULL) {
-		free(xbb->dev_mode, M_XENBUS);
+		free(xbb->dev_mode, M_XENSTORE);
 		xbb->dev_mode = NULL;
 	}
 
 	if (xbb->dev_type != NULL) {
-		free(xbb->dev_type, M_XENBUS);
+		free(xbb->dev_type, M_XENSTORE);
 		xbb->dev_type = NULL;
 	}
 
 	if (xbb->dev_name != NULL) {
-		free(xbb->dev_name, M_XENBUS);
+		free(xbb->dev_name, M_XENSTORE);
 		xbb->dev_name = NULL;
 	}