diff --git a/src/server/game/Spells/SpellEffects.cpp b/src/server/game/Spells/SpellEffects.cpp
index 58c24aa89..e43c64cd3 100755
--- a/src/server/game/Spells/SpellEffects.cpp
+++ b/src/server/game/Spells/SpellEffects.cpp
@@ -3572,8 +3572,8 @@ void Spell::EffectInterruptCast(SpellEffIndex effIndex)
             {
                 if (m_originalCaster)
                 {
-                    int32 duration = m_originalCaster->ModSpellDuration(m_spellInfo, unitTarget, m_originalCaster->CalcSpellDuration(m_spellInfo), false, 1 << effIndex);
-                    unitTarget->ProhibitSpellSchool(curSpellInfo->GetSchoolMask(), duration/*GetSpellDuration(m_spellInfo)*/);
+                    int32 duration = m_spellInfo->GetDuration();
+                    unitTarget->ProhibitSpellSchool(curSpellInfo->GetSchoolMask(), unitTarget->ModSpellDuration(m_spellInfo, unitTarget, duration, false, 1 << effIndex));
                 }
                 ExecuteLogEffectInterruptCast(effIndex, unitTarget, curSpellInfo->Id);
                 unitTarget->InterruptSpell(CurrentSpellTypes(i), false);