diff --git a/app/assets/javascripts/app/services/extensionManager.js b/app/assets/javascripts/app/services/extensionManager.js
index d18cf868c..d9a0260f6 100644
--- a/app/assets/javascripts/app/services/extensionManager.js
+++ b/app/assets/javascripts/app/services/extensionManager.js
@@ -281,7 +281,11 @@ class ExtensionManager {
   }
 
   outgoingParamsForItem(item, extension) {
-    var itemParams = new ItemParams(item, this.syncManager.masterKey);
+    var ek = this.syncManager.masterKey;
+    if(!this.extensionUsesEncryptedData(extension)) {
+      ek = null;
+    }
+    var itemParams = new ItemParams(item, ek);
     return itemParams.paramsForExtension();
   }