diff --git a/data/battle_scripts_1.s b/data/battle_scripts_1.s
index 6574e26ab3..0dc88eb43f 100644
--- a/data/battle_scripts_1.s
+++ b/data/battle_scripts_1.s
@@ -7925,7 +7925,7 @@ BattleScript_DrizzleActivates::
 	call BattleScript_WeatherFormChanges
 	end3
 
-BattleScript_DefiantActivates::
+BattleScript_AbilityRaisesDefenderStat::
 	pause B_WAIT_TIME_SHORT
 	call BattleScript_AbilityPopUp
 	statbuffchange 0, NULL
diff --git a/include/battle_scripts.h b/include/battle_scripts.h
index 740d27148a..5fd70159b8 100644
--- a/include/battle_scripts.h
+++ b/include/battle_scripts.h
@@ -308,7 +308,7 @@ extern const u8 BattleScript_MistySurgeActivates[];
 extern const u8 BattleScript_ElectricSurgeActivates[];
 extern const u8 BattleScript_SpectralThiefSteal[];
 extern const u8 BattleScript_StatUpMsg[];
-extern const u8 BattleScript_DefiantActivates[];
+extern const u8 BattleScript_AbilityRaisesDefenderStat[];
 extern const u8 BattleScript_PowderMoveNoEffect[];
 extern const u8 BattleScript_GrassyTerrainHeals[];
 extern const u8 BattleScript_VCreateStatLoss[];
diff --git a/include/constants/battle_config.h b/include/constants/battle_config.h
index a3ef7cc94b..a8d6ebdf74 100644
--- a/include/constants/battle_config.h
+++ b/include/constants/battle_config.h
@@ -181,7 +181,7 @@
 #define B_FLASH_FIRE_FROZEN         GEN_7 // In Gen5+, Flash Fire can trigger even when frozen, when it couldn't before.
 #define B_SYNCHRONIZE_NATURE        GEN_8 // In Gen8, if a Pokémon with Synchronize is leading the party, it's 100% guaranteed that wild Pokémon will have the same ability, as opposed to 50% previously.
 #define B_SYNCHRONIZE_TOXIC         GEN_8 // In Gen5+, if a Pokémon with Synchronize is badly poisoned, the opponent will also become badly poisoned. Previously, the opponent would become regular poisoned.
-#define B_UPDATED_INTIMIDATE        GEN_8 // In Gen8, Intimidate doesn't work on opponents with the Inner Focus, Scrappy, Own Tempo or Oblivious abilities.
+#define B_UPDATED_INTIMIDATE        GEN_8 // In Gen8, Intimidate doesn't work on opponents with the Inner Focus, Scrappy, Own Tempo or Oblivious abilities. It also activates Rattled.
 
 // Item settings
 #define B_HP_BERRIES                GEN_7 // In Gen4+, berries which restore hp activate immediately after HP drops to half. In Gen3, the effect occurs at the end of the turn.
diff --git a/src/battle_util.c b/src/battle_util.c
index 55602cdc1d..abd6c9c21a 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -1575,12 +1575,22 @@ void PrepareStringBattle(u16 stringId, u8 battler)
         gBattleScripting.stickyWebStatDrop = 0;
         gBattlerAbility = gBattlerTarget;
         BattleScriptPushCursor();
-        gBattlescriptCurrInstr = BattleScript_DefiantActivates;
+        gBattlescriptCurrInstr = BattleScript_AbilityRaisesDefenderStat;
         if (targetAbility == ABILITY_DEFIANT)
             SET_STATCHANGER(STAT_ATK, 2, FALSE);
         else
             SET_STATCHANGER(STAT_SPATK, 2, FALSE);
     }
+#if  B_UPDATED_INTIMIDATE >= GEN_8
+    else if (stringId == STRINGID_PKMNCUTSATTACKWITH && targetAbility == ABILITY_RATTLED
+            && CompareStat(gBattlerTarget, STAT_SPEED, MAX_STAT_STAGE, CMP_LESS_THAN))
+    {
+        gBattlerAbility = gBattlerTarget;
+        BattleScriptPushCursor();
+        gBattlescriptCurrInstr = BattleScript_AbilityRaisesDefenderStat;
+        SET_STATCHANGER(STAT_SPEED, 1, FALSE);
+    }
+#endif
 
     gActiveBattler = battler;
     BtlController_EmitPrintString(BUFFER_A, stringId);