diff --git a/apps/openmw/mwmechanics/summoning.cpp b/apps/openmw/mwmechanics/summoning.cpp
index ec9bd0ea0..668031141 100644
--- a/apps/openmw/mwmechanics/summoning.cpp
+++ b/apps/openmw/mwmechanics/summoning.cpp
@@ -51,6 +51,10 @@ namespace MWMechanics
 
     }
 
+    UpdateSummonedCreatures::~UpdateSummonedCreatures()
+    {
+    }
+
     void UpdateSummonedCreatures::visit(EffectKey key, const std::string &sourceName, const std::string &sourceId, int casterActorId, float magnitude, float remainingTime, float totalTime)
     {
         if (isSummoningEffect(key.mId) && magnitude > 0)
diff --git a/apps/openmw/mwmechanics/summoning.hpp b/apps/openmw/mwmechanics/summoning.hpp
index b8fe37783..8e418cdeb 100644
--- a/apps/openmw/mwmechanics/summoning.hpp
+++ b/apps/openmw/mwmechanics/summoning.hpp
@@ -14,6 +14,7 @@ namespace MWMechanics
     struct UpdateSummonedCreatures : public EffectSourceVisitor
     {
         UpdateSummonedCreatures(const MWWorld::Ptr& actor);
+        virtual ~UpdateSummonedCreatures();
 
         virtual void visit (MWMechanics::EffectKey key,
                                  const std::string& sourceName, const std::string& sourceId, int casterActorId,