diff --git a/src/game/GridNotifiersImpl.h b/src/game/GridNotifiersImpl.h
index 4c4f8c238..ed1f74158 100644
--- a/src/game/GridNotifiersImpl.h
+++ b/src/game/GridNotifiersImpl.h
@@ -180,7 +180,7 @@ inline void MaNGOS::DynamicObjectUpdater::VisitHelper(Unit* target)
         if (Aura* aura = holder->GetAuraByEffectIndex(eff_index))
         {
             // already exists, refresh duration
-            if (aura->GetAuraDuration() < i_dynobject.GetDuration())
+            if (aura->GetAuraDuration() >=0 && uint32(aura->GetAuraDuration()) < i_dynobject.GetDuration())
             {
                 aura->SetAuraDuration(i_dynobject.GetDuration());
                 holder->SendAuraUpdate(false);
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 76fae9633..eba92a6e8 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "10336"
+ #define REVISION_NR "10337"
 #endif // __REVISION_NR_H__