diff --git a/include/constants/battle_config.h b/include/constants/battle_config.h
index be58ba7e74..692ad48ed9 100644
--- a/include/constants/battle_config.h
+++ b/include/constants/battle_config.h
@@ -35,6 +35,7 @@
     #define SPECIES_ZYGARDE                 0     // 50%
     #define SPECIES_ZYGARDE_10              10011 // 10 %
     #define SPECIES_ZYGARDE_COMPLETE        10012 // 100 %
+    #define SPECIES_MAROWAK_ALOLAN          0
 #endif
 
 // Items with peculiar battle effects.
diff --git a/src/battle_util.c b/src/battle_util.c
index b929b7499d..56d635a136 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -7006,7 +7006,10 @@ static u32 CalcAttackStat(u16 move, u8 battlerAtk, u8 battlerDef, u8 moveType, b
     switch (GetBattlerHoldEffect(battlerAtk, TRUE))
     {
     case HOLD_EFFECT_THICK_CLUB:
-        if ((gBattleMons[battlerAtk].species == SPECIES_CUBONE || gBattleMons[battlerAtk].species == SPECIES_MAROWAK) && IS_MOVE_PHYSICAL(move))
+        if ((gBattleMons[battlerAtk].species == SPECIES_CUBONE
+         || gBattleMons[battlerAtk].species == SPECIES_MAROWAK
+         || gBattleMons[battlerAtk].species == SPECIES_MAROWAK_ALOLAN)
+         && IS_MOVE_PHYSICAL(move))
             MulModifier(&modifier, UQ_4_12(2.0));
         break;
     case HOLD_EFFECT_DEEP_SEA_TOOTH: