diff --git a/include/constants/battle_config.h b/include/constants/battle_config.h
index ba9c1b984c..d28e9da5c2 100644
--- a/include/constants/battle_config.h
+++ b/include/constants/battle_config.h
@@ -181,7 +181,7 @@
 #define B_LURE_BALL_MODIFIER        GEN_7 // In Gen7+, Lure Ball's catch multiplier is x5 instead of x3.
 #define B_HEAVY_BALL_MODIFIER       GEN_7 // In Gen7+, Heavy Ball's ranges change. See Cmd_handleballthrow.
 #define B_DREAM_BALL_MODIFIER       GEN_8 // In Gen8, Dream Ball's catch multiplier is x4 when the target is asleep or has the ability Comatose.
-#define B_KINGS_ROCK_BOOST          GEN_7 // In Gen5+, King's Rock is boosted by Serene Grace
+#define B_SERENE_GRACE_BOOST        GEN_7 // In Gen5+, Serene Grace boosts King's Rock and Razor fang
 
 // Flag settings
 // To use the following features in scripting, replace the 0s with the flag ID you're assigning it to.
diff --git a/src/battle_util.c b/src/battle_util.c
index 8b23cdec37..18847b8cce 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -6860,7 +6860,7 @@ u8 ItemBattleEffects(u8 caseID, u8 battlerId, bool8 moveTurn)
         switch (atkHoldEffect)
         {
         case HOLD_EFFECT_FLINCH:
-            #if B_KINGS_ROCK_BOOST >= GEN_5
+            #if B_SERENE_GRACE_BOOST >= GEN_5
                 if (GetBattlerAbility(gBattlerAttacker) == ABILITY_SERENE_GRACE)
                     atkHoldEffectParam *= 2;
             #endif