diff --git a/apps/openmw/mwdialogue/dialoguemanagerimp.cpp b/apps/openmw/mwdialogue/dialoguemanagerimp.cpp
index c29476c7f..dea942349 100644
--- a/apps/openmw/mwdialogue/dialoguemanagerimp.cpp
+++ b/apps/openmw/mwdialogue/dialoguemanagerimp.cpp
@@ -360,47 +360,8 @@ namespace MWDialogue
             }
         }
 
-        // check the available services of this actor
-        int services = mActor.getClass().getServices(mActor);
-
-        int windowServices = 0;
-
-        if (services & ESM::NPC::Weapon
-            || services & ESM::NPC::Armor
-            || services & ESM::NPC::Clothing
-            || services & ESM::NPC::Books
-            || services & ESM::NPC::Ingredients
-            || services & ESM::NPC::Picks
-            || services & ESM::NPC::Probes
-            || services & ESM::NPC::Lights
-            || services & ESM::NPC::Apparatus
-            || services & ESM::NPC::RepairItem
-            || services & ESM::NPC::Misc)
-            windowServices |= MWGui::DialogueWindow::Service_Trade;
-
-        if((mActor.getTypeName() == typeid(ESM::NPC).name() && !mActor.get<ESM::NPC>()->mBase->getTransport().empty())
-                || (mActor.getTypeName() == typeid(ESM::Creature).name() && !mActor.get<ESM::Creature>()->mBase->getTransport().empty()))
-            windowServices |= MWGui::DialogueWindow::Service_Travel;
-
-        if (services & ESM::NPC::Spells)
-            windowServices |= MWGui::DialogueWindow::Service_BuySpells;
-
-        if (services & ESM::NPC::Spellmaking)
-            windowServices |= MWGui::DialogueWindow::Service_CreateSpells;
-
-        if (services & ESM::NPC::Training)
-            windowServices |= MWGui::DialogueWindow::Service_Training;
-
-        if (services & ESM::NPC::Enchanting)
-            windowServices |= MWGui::DialogueWindow::Service_Enchant;
-
-        if (services & ESM::NPC::Repair)
-            windowServices |= MWGui::DialogueWindow::Service_Repair;
-
         MWGui::DialogueWindow* win = MWBase::Environment::get().getWindowManager()->getDialogueWindow();
 
-        win->setServices (windowServices);
-
         // sort again, because the previous sort was case-sensitive
         keywordList.sort(Misc::StringUtils::ciLess);
         win->setKeywords(keywordList);
diff --git a/apps/openmw/mwgui/dialogue.cpp b/apps/openmw/mwgui/dialogue.cpp
index 95fa042cf..e4d0af424 100644
--- a/apps/openmw/mwgui/dialogue.cpp
+++ b/apps/openmw/mwgui/dialogue.cpp
@@ -237,7 +237,6 @@ namespace MWGui
 
     DialogueWindow::DialogueWindow()
         : WindowBase("openmw_dialogue_window.layout")
-        , mServices(0)
         , mEnabled(false)
         , mGoodbye(false)
         , mPersuasionDialog()
@@ -411,6 +410,11 @@ namespace MWGui
         mTopicLinks.clear();
         mKeywordSearch.clear();
 
+        int services = mPtr.getClass().getServices(mPtr);
+
+        bool travel = (mPtr.getTypeName() == typeid(ESM::NPC).name() && !mPtr.get<ESM::NPC>()->mBase->getTransport().empty())
+                || (mPtr.getTypeName() == typeid(ESM::Creature).name() && !mPtr.get<ESM::Creature>()->mBase->getTransport().empty());
+
         bool isCompanion = !mPtr.getClass().getScript(mPtr).empty()
                 && mPtr.getRefData().getLocals().getIntVar(mPtr.getClass().getScript(mPtr), "companion");
 
@@ -420,25 +424,25 @@ namespace MWGui
         if (mPtr.getTypeName() == typeid(ESM::NPC).name())
             mTopicsList->addItem(gmst.find("sPersuasion")->getString());
 
-        if (mServices & Service_Trade)
+        if (services & ESM::NPC::AllItems)
             mTopicsList->addItem(gmst.find("sBarter")->getString());
 
-        if (mServices & Service_BuySpells)
+        if (services & ESM::NPC::Spells)
             mTopicsList->addItem(gmst.find("sSpells")->getString());
 
-        if (mServices & Service_Travel)
+        if (services & travel)
             mTopicsList->addItem(gmst.find("sTravel")->getString());
 
-        if (mServices & Service_CreateSpells)
+        if (services & ESM::NPC::Spellmaking)
             mTopicsList->addItem(gmst.find("sSpellmakingMenuTitle")->getString());
 
-        if (mServices & Service_Enchant)
+        if (services & ESM::NPC::Enchanting)
             mTopicsList->addItem(gmst.find("sEnchanting")->getString());
 
-        if (mServices & Service_Training)
+        if (services & ESM::NPC::Training)
             mTopicsList->addItem(gmst.find("sServiceTrainingTitle")->getString());
 
-        if (mServices & Service_Repair)
+        if (services & ESM::NPC::Repair)
             mTopicsList->addItem(gmst.find("sRepair")->getString());
 
         if (isCompanion)
diff --git a/apps/openmw/mwgui/dialogue.hpp b/apps/openmw/mwgui/dialogue.hpp
index dbb33969f..af5fe5efc 100644
--- a/apps/openmw/mwgui/dialogue.hpp
+++ b/apps/openmw/mwgui/dialogue.hpp
@@ -122,20 +122,6 @@ namespace MWGui
         void onFrame(float dt);
         void clear() { resetReference(); }
 
-        // make sure to call these before setKeywords()
-        void setServices(int services) { mServices = services; }
-
-        enum Services
-        {
-            Service_Trade = 0x01,
-            Service_BuySpells = 0x02,
-            Service_CreateSpells = 0x04,
-            Service_Enchant = 0x08,
-            Service_Training = 0x10,
-            Service_Travel = 0x20,
-            Service_Repair = 0x40
-        };
-
     protected:
         void onSelectTopic(const std::string& topic, int id);
         void onByeClicked(MyGUI::Widget* _sender);
@@ -152,8 +138,6 @@ namespace MWGui
         void updateOptions();
         void restock();
 
-        int mServices;
-
         bool mEnabled;
 
         bool mGoodbye;
diff --git a/components/esm/loadnpc.hpp b/components/esm/loadnpc.hpp
index 019baa297..d7f30e079 100644
--- a/components/esm/loadnpc.hpp
+++ b/components/esm/loadnpc.hpp
@@ -43,6 +43,8 @@ struct NPC
       Misc          = 0x00400,
       Potions       = 0x02000,
 
+      AllItems = Weapon|Armor|Clothing|Books|Ingredients|Picks|Probes|Lights|Apparatus|RepairItem|Misc|Potions,
+
       // Other services
       Spells        = 0x00800,
       MagicItems    = 0x01000,