Omit 'v' prefix.
diff --git a/git-flow-support b/git-flow-support
index 83da42a..17bdd94 100644
--- a/git-flow-support
+++ b/git-flow-support
@@ -18,7 +18,7 @@
 
 parse_args() {
 	VERSION="$1"
-	BASE="${2:-v${VERSION}}"
+	BASE="${2:-${VERSION}}"
 	if [ "$VERSION" = "" ]; then
 		echo "Missing argument <version>."
 		usage