diff --git a/apps/openmw/mwdialogue/filter.cpp b/apps/openmw/mwdialogue/filter.cpp
index 906e30c768..d3405b2b26 100644
--- a/apps/openmw/mwdialogue/filter.cpp
+++ b/apps/openmw/mwdialogue/filter.cpp
@@ -413,25 +413,25 @@ bool MWDialogue::Filter::getSelectStructBoolean (const SelectWrapper& select) co
 
             return false;
 
-        case SelectWrapper::Function_Id:
+        case SelectWrapper::Function_NotId:
 
-            return select.getName()==Misc::StringUtils::lowerCase (MWWorld::Class::get (mActor).getId (mActor));
+            return select.getName()!=Misc::StringUtils::lowerCase (MWWorld::Class::get (mActor).getId (mActor));
 
-        case SelectWrapper::Function_Faction:
+        case SelectWrapper::Function_NotFaction:
 
-            return Misc::StringUtils::lowerCase (mActor.get<ESM::NPC>()->mBase->mFaction)==select.getName();
+            return Misc::StringUtils::lowerCase (mActor.get<ESM::NPC>()->mBase->mFaction)!=select.getName();
 
-        case SelectWrapper::Function_Class:
+        case SelectWrapper::Function_NotClass:
 
-            return Misc::StringUtils::lowerCase (mActor.get<ESM::NPC>()->mBase->mClass)==select.getName();
+            return Misc::StringUtils::lowerCase (mActor.get<ESM::NPC>()->mBase->mClass)!=select.getName();
 
-        case SelectWrapper::Function_Race:
+        case SelectWrapper::Function_NotRace:
 
-            return Misc::StringUtils::lowerCase (mActor.get<ESM::NPC>()->mBase->mRace)==select.getName();
+            return Misc::StringUtils::lowerCase (mActor.get<ESM::NPC>()->mBase->mRace)!=select.getName();
 
-        case SelectWrapper::Function_Cell:
+        case SelectWrapper::Function_NotCell:
 
-            return Misc::StringUtils::lowerCase (mActor.getCell()->mCell->mName)==select.getName();
+            return Misc::StringUtils::lowerCase (mActor.getCell()->mCell->mName)!=select.getName();
 
         case SelectWrapper::Function_SameGender:
 
diff --git a/apps/openmw/mwdialogue/selectwrapper.cpp b/apps/openmw/mwdialogue/selectwrapper.cpp
index 9d705f6bec..77930ae423 100644
--- a/apps/openmw/mwdialogue/selectwrapper.cpp
+++ b/apps/openmw/mwdialogue/selectwrapper.cpp
@@ -112,11 +112,11 @@ MWDialogue::SelectWrapper::Function MWDialogue::SelectWrapper::getFunction() con
         case '4': return Function_Journal;
         case '5': return Function_Item;
         case '6': return Function_Dead;
-        case '7': return Function_Id;
-        case '8': return Function_Faction;
-        case '9': return Function_Class;
-        case 'A': return Function_Race;
-        case 'B': return Function_Cell;
+        case '7': return Function_NotId;
+        case '8': return Function_NotFaction;
+        case '9': return Function_NotClass;
+        case 'A': return Function_NotRace;
+        case 'B': return Function_NotCell;
         case 'C': return Function_Local;
     }
 
@@ -219,7 +219,7 @@ MWDialogue::SelectWrapper::Type MWDialogue::SelectWrapper::getType() const
     static const Function booleanFunctions[] =
     {
         Function_False,
-        Function_Id, Function_Faction, Function_Class, Function_Race, Function_Cell,
+        Function_NotId, Function_NotFaction, Function_NotClass, Function_NotRace, Function_NotCell,
         Function_SameGender, Function_SameRace, Function_SameFaction,
         Function_PcCommonDisease, Function_PcBlightDisease, Function_PcCorprus,
         Function_PcExpelled,
@@ -259,7 +259,7 @@ bool MWDialogue::SelectWrapper::isNpcOnly() const
 {
     static const Function functions[] =
     {
-        Function_Faction, SelectWrapper::Function_Class, SelectWrapper::Function_Race,
+        Function_NotFaction, SelectWrapper::Function_NotClass, SelectWrapper::Function_NotRace,
         Function_SameGender, Function_SameRace, Function_SameFaction,
         Function_PcSkill,
         Function_PcExpelled,
diff --git a/apps/openmw/mwdialogue/selectwrapper.hpp b/apps/openmw/mwdialogue/selectwrapper.hpp
index b77ed7985a..c27339afa0 100644
--- a/apps/openmw/mwdialogue/selectwrapper.hpp
+++ b/apps/openmw/mwdialogue/selectwrapper.hpp
@@ -17,11 +17,11 @@ namespace MWDialogue
                 Function_Journal,
                 Function_Item,
                 Function_Dead,
-                Function_Id,
-                Function_Faction,
-                Function_Class,
-                Function_Race,
-                Function_Cell,
+                Function_NotId,
+                Function_NotFaction,
+                Function_NotClass,
+                Function_NotRace,
+                Function_NotCell,
                 Function_Local,
                 Function_Global,
                 Function_SameGender, Function_SameRace, Function_SameFaction,