diff --git a/data/moves.js b/data/moves.js
index b25850468..91db228fa 100644
--- a/data/moves.js
+++ b/data/moves.js
@@ -5048,11 +5048,11 @@ let BattleMovedex = {
 		onModifyMove: function (move) {
 			if (move.sourceEffect === 'waterpledge') {
 				move.type = 'Water';
-				move.hasSTAB = true;
+				move.forceSTAB = true;
 			}
 			if (move.sourceEffect === 'grasspledge') {
 				move.type = 'Fire';
-				move.hasSTAB = true;
+				move.forceSTAB = true;
 			}
 		},
 		onHit: function (target, source, move) {
@@ -6466,11 +6466,11 @@ let BattleMovedex = {
 		onModifyMove: function (move) {
 			if (move.sourceEffect === 'waterpledge') {
 				move.type = 'Grass';
-				move.hasSTAB = true;
+				move.forceSTAB = true;
 			}
 			if (move.sourceEffect === 'firepledge') {
 				move.type = 'Fire';
-				move.hasSTAB = true;
+				move.forceSTAB = true;
 			}
 		},
 		onHit: function (target, source, move) {
@@ -18416,11 +18416,11 @@ let BattleMovedex = {
 		onModifyMove: function (move) {
 			if (move.sourceEffect === 'grasspledge') {
 				move.type = 'Grass';
-				move.hasSTAB = true;
+				move.forceSTAB = true;
 			}
 			if (move.sourceEffect === 'firepledge') {
 				move.type = 'Water';
-				move.hasSTAB = true;
+				move.forceSTAB = true;
 			}
 		},
 		onHit: function (target, source, move) {
diff --git a/dev-tools/globals.ts b/dev-tools/globals.ts
index 935ac2cc3..08a0e8f7d 100644
--- a/dev-tools/globals.ts
+++ b/dev-tools/globals.ts
@@ -507,6 +507,7 @@ interface MoveData extends EffectData {
 	volatileStatus?: string
 	weather?: string
 	willCrit?: boolean
+	forceSTAB?: boolean
 	zMovePower?: number
 	zMoveEffect?: string
 	zMoveBoost?: SparseBoostsTable
@@ -537,7 +538,6 @@ interface ActiveMove extends Effect, MoveData {
 	hasAuraBreak?: boolean
 	hasBounced?: boolean
 	hasSheerForce?: boolean
-	hasSTAB?: boolean
 	isExternal?: boolean
 	lastHit?: boolean
 	magnitude?: number
diff --git a/mods/gen4/scripts.js b/mods/gen4/scripts.js
index 316284f9d..485c0c94a 100644
--- a/mods/gen4/scripts.js
+++ b/mods/gen4/scripts.js
@@ -52,7 +52,7 @@ let BattleScripts = {
 		baseDamage = this.randomizer(baseDamage);
 
 		// STAB
-		if (move.hasSTAB || type !== '???' && pokemon.hasType(type)) {
+		if (move.forceSTAB || type !== '???' && pokemon.hasType(type)) {
 			// The "???" type never gets STAB
 			// Not even if you Roost in Gen 4 and somehow manage to use
 			// Struggle in the same turn.
diff --git a/sim/battle.js b/sim/battle.js
index 7967211c6..abeaa60b2 100644
--- a/sim/battle.js
+++ b/sim/battle.js
@@ -2287,7 +2287,7 @@ class Battle extends Dex.ModdedDex {
 		baseDamage = this.randomizer(baseDamage);
 
 		// STAB
-		if (move.hasSTAB || (type !== '???' && pokemon.hasType(type))) {
+		if (move.forceSTAB || (type !== '???' && pokemon.hasType(type))) {
 			// The "???" type never gets STAB
 			// Not even if you Roost in Gen 4 and somehow manage to use
 			// Struggle in the same turn.
diff --git a/sim/dex-data.js b/sim/dex-data.js
index 12c9d48c5..9ba42cd4a 100644
--- a/sim/dex-data.js
+++ b/sim/dex-data.js
@@ -1104,7 +1104,7 @@ class Move extends Effect {
 		 * Forces the move to get STAB even if the type doesn't match
 		 * @type {boolean}
 		 */
-		this.hasSTAB = !!this.hasSTAB;
+		this.forceSTAB = !!this.forceSTAB;
 
 		/**
 		 * True if it can't be copied with Sketch