diff --git a/Engine/Helper.cs b/Engine/Helper.cs
index 6cdc71d35..22ef21c1e 100644
--- a/Engine/Helper.cs
+++ b/Engine/Helper.cs
@@ -140,6 +140,7 @@ public Helper(CommandInvocationIntrinsics invokeCommand) : this()
         /// </summary>
         public void Initialize()
         {
+            _ruleArguments.Clear();
             _aliasToCmdletDictionary.Clear();
             _cmdletToAliasDictionary.Clear();
             _keywordBlockDictionary.Clear();