diff --git a/apps/openmw/mwmechanics/actors.cpp b/apps/openmw/mwmechanics/actors.cpp
index efca99b4e..cbc43636c 100644
--- a/apps/openmw/mwmechanics/actors.cpp
+++ b/apps/openmw/mwmechanics/actors.cpp
@@ -470,13 +470,13 @@ namespace MWMechanics
             return;
 
         MWMechanics::CreatureStats& stats = ptr.getClass().getCreatureStats (ptr);
-        const MWWorld::Store<ESM::GameSetting>& settings = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>();
 
         int endurance = stats.getAttribute (ESM::Attribute::Endurance).getModified ();
 
         // restore fatigue
-        float fFatigueReturnBase = settings.find("fFatigueReturnBase")->getFloat ();
-        float fFatigueReturnMult = settings.find("fFatigueReturnMult")->getFloat ();
+        const MWWorld::Store<ESM::GameSetting>& settings = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>();
+        static float fFatigueReturnBase = settings.find("fFatigueReturnBase")->getFloat ();
+        static float fFatigueReturnMult = settings.find("fFatigueReturnMult")->getFloat ();
 
         float x = fFatigueReturnBase + fFatigueReturnMult * endurance;