diff --git a/src/Enyim.Caching/Memcached/Protocol/Text/TextOperationFactory.cs b/src/Enyim.Caching/Memcached/Protocol/Text/TextOperationFactory.cs
index 6c87efb8..fe80e228 100644
--- a/src/Enyim.Caching/Memcached/Protocol/Text/TextOperationFactory.cs
+++ b/src/Enyim.Caching/Memcached/Protocol/Text/TextOperationFactory.cs
@@ -20,7 +20,7 @@ IStoreOperation IOperationFactory.Store(StoreMode mode, string key, CacheItem va
 			if (cas == 0)
 				return new StoreOperation(mode, key, value, expires);
 
-			return new CasOperation(key, value, expires, (uint)cas);
+			return new CasOperation(key, value, expires, cas);
 		}
 
 		IDeleteOperation IOperationFactory.Delete(string key, ulong cas)