diff --git a/src/server/game/Entities/Unit/Unit.cpp b/src/server/game/Entities/Unit/Unit.cpp
index 26e3a79503d..25219f05429 100755
--- a/src/server/game/Entities/Unit/Unit.cpp
+++ b/src/server/game/Entities/Unit/Unit.cpp
@@ -11127,6 +11127,13 @@ bool Unit::isSpellCrit(Unit* victim, SpellInfo const* spellProto, SpellSchoolMas
                 // Custom crit by class
                 switch (spellProto->SpellFamilyName)
                 {
+                    case SPELLFAMILY_MAGE:
+                        // Glyph of Fire Blast
+                        if ((spellProto->SpellFamilyFlags[0] & 0x2) == 0x2 && spellProto->SpellIconID == 12)
+                            if (victim->HasAuraWithMechanic((1<<MECHANIC_STUN) | (1<<MECHANIC_KNOCKOUT))
+                                if (AuraEffect const* aurEff = GetAuraEffect(56369, EFFECT_0))
+                                    crit_chance += aurEff->GetAmount();
+                        break;
                     case SPELLFAMILY_DRUID:
                         // Improved Faerie Fire
                         if (victim->HasAuraState(AURA_STATE_FAERIE_FIRE))