diff --git a/Data/Scripts/011_Battle/001_Battler/009_Battler_UseMove_SuccessChecks.rb b/Data/Scripts/011_Battle/001_Battler/009_Battler_UseMove_SuccessChecks.rb
index 33e23c676..225dbc6d1 100644
--- a/Data/Scripts/011_Battle/001_Battler/009_Battler_UseMove_SuccessChecks.rb
+++ b/Data/Scripts/011_Battle/001_Battler/009_Battler_UseMove_SuccessChecks.rb
@@ -512,6 +512,9 @@ class PokeBattle_Battler
         miss = true if !move.hitsFlyingTargets?
       end
     end
+    if user.hasActiveItem?(:MANKEYPAW)
+      miss = true if rand(2)==1
+    end
     if !miss
       # Called by another move
       return true if skipAccuracyCheck
diff --git a/Data/Scripts/011_Battle/002_Move/003_Move_Usage_Calculations.rb b/Data/Scripts/011_Battle/002_Move/003_Move_Usage_Calculations.rb
index f17b3bc78..1ff5f6b13 100644
--- a/Data/Scripts/011_Battle/002_Move/003_Move_Usage_Calculations.rb
+++ b/Data/Scripts/011_Battle/002_Move/003_Move_Usage_Calculations.rb
@@ -192,6 +192,7 @@ class PokeBattle_Move
     when -1 then return false
     end
     # Other effects
+    return true if user.hasActiveItem?(:MANKEYPAW)
     return true if c>50   # Merciless
     return true if user.effects[PBEffects::LaserFocus]>0
     c += 1 if highCriticalRate?
diff --git a/Data/System.rxdata b/Data/System.rxdata
index 0982b9755..2472ee384 100644
Binary files a/Data/System.rxdata and b/Data/System.rxdata differ