diff --git a/Data/Actors.rxdata b/Data/Actors.rxdata
index 41edc8e26..7967a5432 100644
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diff --git a/Data/Animations.rxdata b/Data/Animations.rxdata
index 826e1e8a6..8e67182ba 100644
Binary files a/Data/Animations.rxdata and b/Data/Animations.rxdata differ
diff --git a/Data/Armors.rxdata b/Data/Armors.rxdata
index 901f2bb2b..2249bec14 100644
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diff --git a/Data/CommonEvents.rxdata b/Data/CommonEvents.rxdata
index 3a99093c5..8af865203 100644
Binary files a/Data/CommonEvents.rxdata and b/Data/CommonEvents.rxdata differ
diff --git a/Data/Enemies.rxdata b/Data/Enemies.rxdata
index be622f513..004ee903d 100644
Binary files a/Data/Enemies.rxdata and b/Data/Enemies.rxdata differ
diff --git a/Data/Items.rxdata b/Data/Items.rxdata
index fe767fa0b..3e62ba6d2 100644
Binary files a/Data/Items.rxdata and b/Data/Items.rxdata differ
diff --git a/Data/MapInfos.rxdata b/Data/MapInfos.rxdata
index 2648ba4c4..357f61571 100644
Binary files a/Data/MapInfos.rxdata and b/Data/MapInfos.rxdata differ
diff --git a/Data/Scripts/001_Settings.rb b/Data/Scripts/001_Settings.rb
index f1578c316..6ae9410b7 100644
--- a/Data/Scripts/001_Settings.rb
+++ b/Data/Scripts/001_Settings.rb
@@ -6,7 +6,7 @@
 module Settings
   # The version of your game. It has to adhere to the MAJOR.MINOR.PATCH format.
   GAME_VERSION = '5.0.0'
-  GAME_VERSION_NUMBER = "5.1.2"
+  GAME_VERSION_NUMBER = "5.1.3"
 
   POKERADAR_LIGHT_ANIMATION_RED_ID = 17
   POKERADAR_LIGHT_ANIMATION_GREEN_ID = 18
diff --git a/Data/Scripts/014_Pokemon/001_Pokemon.rb b/Data/Scripts/014_Pokemon/001_Pokemon.rb
index 5c7606f9b..e1354b3a8 100644
--- a/Data/Scripts/014_Pokemon/001_Pokemon.rb
+++ b/Data/Scripts/014_Pokemon/001_Pokemon.rb
@@ -42,6 +42,10 @@ class Pokemon
   # defined at this index. Is recalculated (as 0 or 1) if made nil.
   # @param value [Integer, nil] forced ability index (nil if none is set)
   attr_writer :ability_index
+  attr_accessor :body_original_ability_index
+  attr_accessor :head_original_ability_index
+
+
   # @return [Array<Pokemon::Move>] the moves known by this Pokémon
   attr_accessor :moves
   # @return [Array<Integer>] the IDs of moves known by this Pokémon when it was obtained
diff --git a/Data/Scripts/048_Fusion/PokemonFusion.rb b/Data/Scripts/048_Fusion/PokemonFusion.rb
index b83a8f75b..a7ea02ada 100644
--- a/Data/Scripts/048_Fusion/PokemonFusion.rb
+++ b/Data/Scripts/048_Fusion/PokemonFusion.rb
@@ -801,7 +801,12 @@ def setAbilityAndNatureAndNickname(abilitiesList, naturesList)
   screen = PokemonOptionScreen.new(scene)
   screen.pbStartScreen
 
+  @pokemon1.body_original_ability_index = @pokemon1.ability_index
+  @pokemon1.head_original_ability_index = @pokemon2.ability_index
+
+
   @pokemon1.ability = scene.selectedAbility
+  @pokemon1.ability_index = locate_ability_index(@pokemon1,scene.selectedAbility)
   @pokemon1.nature = scene.selectedNature
   if scene.hasNickname
     @pokemon1.name = scene.nickname
@@ -809,6 +814,17 @@ def setAbilityAndNatureAndNickname(abilitiesList, naturesList)
 
 end
 
+def locate_ability_index(pokemon, ability)
+  abilityList = pokemon.getAbilityList
+  for possible_ability in abilityList
+    if possible_ability[0] == ability.id
+      return possible_ability[1]
+    end
+  end
+  return nil
+end
+
+
 def setFusionMoves(fusedPoke, poke2, selected2ndOption = false)
   #NEW METHOD (not ready)
 
diff --git a/Data/Scripts/050_AddOns/New Items effects.rb b/Data/Scripts/050_AddOns/New Items effects.rb
index 1482ff0ee..9a707bb69 100644
--- a/Data/Scripts/050_AddOns/New Items effects.rb	
+++ b/Data/Scripts/050_AddOns/New Items effects.rb	
@@ -1479,6 +1479,10 @@ def pbUnfuse(pokemon, scene, supersplicers, pcPosition = nil)
           end
         end
       end
+
+      pokemon.ability_index = pokemon.body_original_ability_index if pokemon.body_original_ability_index
+      poke2.ability_index = pokemon.head_original_ability_index if pokemon.head_original_ability_index
+
       pokemon.debug_shiny=true if pokemon.debug_shiny && pokemon.body_shiny
       poke2.debug_shiny=true if pokemon.debug_shiny && poke2.head_shiny
 
diff --git a/Data/Skills.rxdata b/Data/Skills.rxdata
index a45219f5e..61cba7ea2 100644
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diff --git a/Data/States.rxdata b/Data/States.rxdata
index 868d49e59..0f9b4ae5d 100644
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diff --git a/Data/System.rxdata b/Data/System.rxdata
index fd5edf602..751c8d403 100644
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diff --git a/Data/Tilesets.rxdata b/Data/Tilesets.rxdata
index a2ad9367f..c84114c9c 100644
Binary files a/Data/Tilesets.rxdata and b/Data/Tilesets.rxdata differ
diff --git a/Data/Weapons.rxdata b/Data/Weapons.rxdata
index c7ea19a7a..d9bd35260 100644
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