diff --git a/battle-engine.js b/battle-engine.js
index 7921378c5a..9f80537452 100644
--- a/battle-engine.js
+++ b/battle-engine.js
@@ -2323,11 +2323,11 @@ Battle = (function () {
 					ModifyAtk: 1, ModifyDef: 1, ModifySpA: 1, ModifySpD: 1, ModifySpe: 1,
 					ModifyBoost: 1,
 					ModifyDamage: 1,
+					ModifySecondaries: 1,
 					ModifyWeight: 1,
 					TryHit: 1,
 					TryHitSide: 1,
 					TryMove: 1,
-					TrySecondaryHit: 1,
 					Hit: 1,
 					Boost: 1,
 					DragOut: 1
diff --git a/data/abilities.js b/data/abilities.js
index 0e1fdeeab4..428cf0e542 100644
--- a/data/abilities.js
+++ b/data/abilities.js
@@ -2350,9 +2350,11 @@ exports.BattleAbilities = {
 	},
 	"shielddust": {
 		shortDesc: "This Pokemon is not affected by the secondary effect of another Pokemon's attack.",
-		onTrySecondaryHit: function () {
+		onModifySecondaries: function (secondaries) {
 			this.debug('Shield Dust prevent secondary');
-			return null;
+			return secondaries.filter(function (effect) {
+				return !!effect.self;
+			});
 		},
 		id: "shielddust",
 		name: "Shield Dust",
diff --git a/data/scripts.js b/data/scripts.js
index 098a688992..c114679f19 100644
--- a/data/scripts.js
+++ b/data/scripts.js
@@ -551,12 +551,13 @@ exports.BattleScripts = {
 				this.moveHit(pokemon, pokemon, move, moveData.self, isSecondary, true);
 			}
 		}
-		if (moveData.secondaries && this.runEvent('TrySecondaryHit', target, pokemon, moveData)) {
+		if (moveData.secondaries) {
 			var secondaryRoll;
-			for (var i = 0; i < moveData.secondaries.length; i++) {
+			var secondaries = this.runEvent('ModifySecondaries', target, pokemon, moveData, moveData.secondaries.slice());
+			for (var i = 0; i < secondaries.length; i++) {
 				secondaryRoll = this.random(100);
-				if (typeof moveData.secondaries[i].chance === 'undefined' || secondaryRoll < moveData.secondaries[i].chance) {
-					this.moveHit(target, pokemon, move, moveData.secondaries[i], true, isSelf);
+				if (typeof secondaries[i].chance === 'undefined' || secondaryRoll < secondaries[i].chance) {
+					this.moveHit(target, pokemon, move, secondaries[i], true, isSelf);
 				}
 			}
 		}