1 files changed, 4 insertions, 0 deletions
diff --git a/parse.y b/parse.y
index 58283dceb2..da63620f49 100644
--- a/parse.y
+++ b/parse.y
@@ -2399,6 +2399,10 @@ opt_block_arg	: ',' block_arg
 		    {
 			$$ = $2;
 		    }
+		| ','
+		    {
+			$$ = 0;
+		    }
 		| none
 		    {
 			$$ = 0;