diff --git a/MVMCore/MVMCore/ActionHandling/ActionHandler+ClientParameters.swift b/MVMCore/MVMCore/ActionHandling/ActionHandler+ClientParameters.swift
index 5f9cb0a..6378cea 100644
--- a/MVMCore/MVMCore/ActionHandling/ActionHandler+ClientParameters.swift
+++ b/MVMCore/MVMCore/ActionHandling/ActionHandler+ClientParameters.swift
@@ -10,7 +10,7 @@ import Foundation
 
 public extension MVMCoreActionHandler {
 
-    ///  Iterates throw the clientParameters list. Gets values from the individul handlers and attaches the paramters to extraParameters. 
+    ///  Iterates threw the clientParameters list. Gets values from the individual handlers and attaches the parameters to extraParameters.
     @objc func setClientParameter(with actionMap: [String: Any]?, completionHandler: @escaping ([String : Any]?) -> ()) {
 
         guard let clientParameters = actionMap?.optionalDictionaryForKey("clientParameters") else {
@@ -38,7 +38,7 @@ public extension MVMCoreActionHandler {
                     return
                 }
 
-                var extraParams: [String : Any] = actionMap?.optionalDictionaryForKey(KeyExtraParameters) ?? [:]
+                var extraParams: [String : Any] = actionMap?.dictionaryForKey(KeyExtraParameters)
                 extraParams.merge(clientParams) { (_, new) in new }
                 var actionMapM = actionMap
                 actionMapM?[KeyExtraParameters] = extraParams