diff --git a/dom/plugins/PluginScriptableObjectParent.cpp b/dom/plugins/PluginScriptableObjectParent.cpp
index 56ca104cb5e..454185c5fdb 100644
--- a/dom/plugins/PluginScriptableObjectParent.cpp
+++ b/dom/plugins/PluginScriptableObjectParent.cpp
@@ -1129,7 +1129,6 @@ PluginScriptableObjectParent::AnswerSetProperty(const NPRemoteIdentifier& aId,
   PluginInstanceParent* instance = GetInstance();
   if (!instance) {
     NS_ERROR("No instance?!");
-    *aResult = void_t();
     *aSuccess = false;
     return true;
   }
@@ -1137,14 +1136,12 @@ PluginScriptableObjectParent::AnswerSetProperty(const NPRemoteIdentifier& aId,
   const NPNetscapeFuncs* npn = GetNetscapeFuncs(instance);
   if (!npn) {
     NS_ERROR("No netscape funcs?!");
-    *aResult = void_t();
     *aSuccess = false;
     return true;
   }
 
   if (!EnsureValidIdentifier(instance, (NPIdentifier)aId)) {
     NS_WARNING("Invalid NPIdentifier!");
-    *aResult = void_t();
     *aSuccess = false;
     return true;
   }
@@ -1177,7 +1174,6 @@ PluginScriptableObjectParent::AnswerRemoveProperty(const NPRemoteIdentifier& aId
   PluginInstanceParent* instance = GetInstance();
   if (!instance) {
     NS_ERROR("No instance?!");
-    *aResult = void_t();
     *aSuccess = false;
     return true;
   }
@@ -1185,7 +1181,6 @@ PluginScriptableObjectParent::AnswerRemoveProperty(const NPRemoteIdentifier& aId
   const NPNetscapeFuncs* npn = GetNetscapeFuncs(instance);
   if (!npn) {
     NS_ERROR("No netscape funcs?!");
-    *aResult = void_t();
     *aSuccess = false;
     return true;
   }
@@ -1216,7 +1211,6 @@ PluginScriptableObjectParent::AnswerEnumerate(nsTArray<NPRemoteIdentifier>* aPro
   PluginInstanceParent* instance = GetInstance();
   if (!instance) {
     NS_ERROR("No instance?!");
-    *aResult = void_t();
     *aSuccess = false;
     return true;
   }