diff --git a/apps/openmw/mwmechanics/activespells.hpp b/apps/openmw/mwmechanics/activespells.hpp
index b5c302afe1..56d9413c39 100644
--- a/apps/openmw/mwmechanics/activespells.hpp
+++ b/apps/openmw/mwmechanics/activespells.hpp
@@ -57,7 +57,7 @@ namespace MWMechanics
 
         private:
 
-            mutable TContainer mSpells; // spellId, (time of casting, relative magnitude)
+            mutable TContainer mSpells;
             mutable MagicEffects mEffects;
             mutable bool mSpellsChanged;
             mutable MWWorld::TimeStamp mLastUpdate;
diff --git a/apps/openmw/mwmechanics/actors.cpp b/apps/openmw/mwmechanics/actors.cpp
index 576c830da7..2873816f73 100644
--- a/apps/openmw/mwmechanics/actors.cpp
+++ b/apps/openmw/mwmechanics/actors.cpp
@@ -167,8 +167,9 @@ namespace MWMechanics
             stat.setModifier(effects.get(EffectKey(ESM::MagicEffect::FortifyHealth+i)).mMagnitude -
                              effects.get(EffectKey(ESM::MagicEffect::DrainHealth+i)).mMagnitude);
 
-            float damage = creatureStats.getMagicEffects().get(EffectKey(ESM::MagicEffect::DamageHealth)).mMagnitude;
-            stat.setCurrent(stat.getCurrent() - damage * duration);
+            float currentDiff = creatureStats.getMagicEffects().get(EffectKey(ESM::MagicEffect::RestoreHealth+i)).mMagnitude
+                    - creatureStats.getMagicEffects().get(EffectKey(ESM::MagicEffect::DamageHealth+i)).mMagnitude;
+            stat.setCurrent(stat.getCurrent() + currentDiff * duration);
 
             creatureStats.setDynamic(i, stat);
         }