diff --git a/src/game/Unit.cpp b/src/game/Unit.cpp
index 0b60f28a4..0bca930b2 100644
--- a/src/game/Unit.cpp
+++ b/src/game/Unit.cpp
@@ -7104,6 +7104,12 @@ bool Unit::HandleProcTriggerSpell(Unit *pVictim, uint32 damage, Aura* triggeredB
                 return false;
             break;
         }
+        // Improved Stormstrike
+        case 63375:
+        {
+            basepoints[0] = int32(GetCreateMana() * 0.20f);
+            break;
+        }
         // Brain Freeze
         case 57761:
         {
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index fa558880e..f0bbcc4a4 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 "8537"
+ #define REVISION_NR "8538"
 #endif // __REVISION_NR_H__