diff --git a/apps/openmw/mwmechanics/mechanicsmanagerimp.hpp b/apps/openmw/mwmechanics/mechanicsmanagerimp.hpp
index 793a8158e..6a923072a 100644
--- a/apps/openmw/mwmechanics/mechanicsmanagerimp.hpp
+++ b/apps/openmw/mwmechanics/mechanicsmanagerimp.hpp
@@ -92,7 +92,7 @@ namespace MWMechanics
             virtual int getBarterOffer(const MWWorld::Ptr& ptr,int basePrice, bool buying);
             ///< This is used by every service to determine the price of objects given the trading skills of the player and NPC.
 
-            virtual int getDerivedDisposition(const MWWorld::Ptr& ptr, bool addTemporaryDispositionChange = false);
+            virtual int getDerivedDisposition(const MWWorld::Ptr& ptr, bool addTemporaryDispositionChange = true);
             ///< Calculate the diposition of an NPC toward the player.
 
             virtual int countDeaths (const std::string& id) const;