diff --git a/src/game/SpellAuras.cpp b/src/game/SpellAuras.cpp
index ed8dc9900..630124542 100644
--- a/src/game/SpellAuras.cpp
+++ b/src/game/SpellAuras.cpp
@@ -4579,6 +4579,14 @@ void Aura::HandlePeriodicTriggerSpell(bool apply, bool /*Real*/)
                 if (m_removeMode == AURA_REMOVE_BY_DEFAULT && GetEffIndex() + 1 < MAX_EFFECT_INDEX)
                     m_target->CastSpell(m_target, m_spellProto->CalculateSimpleValue(SpellEffectIndex(GetEffIndex()+1)), true);
                 return;
+            case 51912:                                     // Ultra-Advanced Proto-Typical Shortening Blaster
+                if (m_removeMode == AURA_REMOVE_BY_DEFAULT && m_duration <= 0)
+                {
+                    if (Unit* pCaster = GetCaster())
+                        pCaster->CastSpell(m_target, m_spellProto->EffectTriggerSpell[GetEffIndex()], true, NULL, this);
+                }
+
+                return;
             default:
                 break;
         }
diff --git a/src/game/SpellEffects.cpp b/src/game/SpellEffects.cpp
index 2eff38aa0..b1c8fa298 100644
--- a/src/game/SpellEffects.cpp
+++ b/src/game/SpellEffects.cpp
@@ -5378,14 +5378,12 @@ void Spell::EffectScriptEffect(SpellEffectIndex eff_idx)
                     unitTarget->CastSpell(unitTarget, 44870, true);
                     break;
                 }
-                /* Spell 51912 that trigger this need correction before this can work.
-                   Some additional research also seem to be needed + adjustment, this is mostly place holder for spells used.
                 case 45668:                                 // Ultra-Advanced Proto-Typical Shortening Blaster
                 {
                     if (!unitTarget || unitTarget->GetTypeId() != TYPEID_UNIT)
                         return;
 
-                    if (roll_chance_i(50))                  // chance unknown, using 50
+                    if (roll_chance_i(25))                  // chance unknown, using 25
                         return;
 
                     static uint32 const spellPlayer[5] =
@@ -5410,7 +5408,7 @@ void Spell::EffectScriptEffect(SpellEffectIndex eff_idx)
                     unitTarget->CastSpell(unitTarget, spellTarget[urand(0,4)], true);
 
                     return;
-                }*/
+                }
                 case 46203:                                 // Goblin Weather Machine
                 {
                     if (!unitTarget)
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 960b312ce..bd81b3171 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 "9457"
+ #define REVISION_NR "9458"
 #endif // __REVISION_NR_H__