diff --git a/include/constants/battle_config.h b/include/constants/battle_config.h
index 6f4e283ca5..7f4facf026 100644
--- a/include/constants/battle_config.h
+++ b/include/constants/battle_config.h
@@ -51,6 +51,7 @@
     #define SPECIES_MELOETTA_PIROUETTE      10019
     #define SPECIES_MORPEKO                 0
     #define SPECIES_MORPEKO_HANGRY          10020
+    #define SPECIES_SIRFETCHD               10021
 #endif
 
 // Items with peculiar battle effects.
diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index 4a5b09df37..fe7d3ca305 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -1893,7 +1893,9 @@ s32 CalcCritChanceStage(u8 battlerAtk, u8 battlerDef, u32 move, bool32 recordAbi
                     + ((gBattleMoves[gCurrentMove].flags & FLAG_HIGH_CRIT) != 0)
                     + (holdEffectAtk == HOLD_EFFECT_SCOPE_LENS)
                     + 2 * (holdEffectAtk == HOLD_EFFECT_LUCKY_PUNCH && gBattleMons[gBattlerAttacker].species == SPECIES_CHANSEY)
-                    + 2 * (holdEffectAtk == HOLD_EFFECT_LEEK && gBattleMons[gBattlerAttacker].species == SPECIES_FARFETCHD)
+                    + 2 * (holdEffectAtk == HOLD_EFFECT_LEEK
+                            && (GET_BASE_SPECIES_ID(gBattleMons[gBattlerAttacker].species) == SPECIES_FARFETCHD
+                            || gBattleMons[gBattlerAttacker].species == SPECIES_SIRFETCHD))
                     + (abilityAtk == ABILITY_SUPER_LUCK);
 
         if (critChance >= ARRAY_COUNT(sCriticalHitChance))