diff --git a/super0.c b/super0.c
index 7e81482..8e4c568 100644
--- a/super0.c
+++ b/super0.c
@@ -849,12 +849,15 @@ static struct supertype *match_metadata_desc0(char *arg)
 	st->sb = NULL;
 	if (strcmp(arg, "0") == 0 ||
 	    strcmp(arg, "0.90") == 0 ||
-	    strcmp(arg, "0.91") == 0 ||
 	    strcmp(arg, "default") == 0 ||
 	    strcmp(arg, "") == 0 /* no metadata */
 		)
 		return st;
 
+	st->minor_version = 91; /* reshape in progress */
+	if (strcmp(arg, "0.91") == 0) /* For dup_super support */
+		return st;
+
 	st->minor_version = 9; /* flag for 'byte-swapped' */
 	if (strcmp(arg, "0.swap")==0 ||
 	    strcmp(arg, "0.9") == 0) /* For dup_super support */