diff --git a/src/multi.c b/src/multi.c
index 44036256da50859bc5c2f3bd89709dde7d52b346..5c88340055ce6104171ac3e33febb0105c6ad7b8 100644
--- a/src/multi.c
+++ b/src/multi.c
@@ -57,7 +57,7 @@ void discardCommand(redisClient *c) {
 
     freeClientMultiState(c);
     initClientMultiState(c);
-    c->flags &= (~REDIS_MULTI);
+    c->flags &= ~(REDIS_MULTI|REDIS_DIRTY_CAS);;
     unwatchAllKeys(c);
     addReply(c,shared.ok);
 }