diff --git a/core/src/mindustry/entities/abilities/UnitSpawnAbility.java b/core/src/mindustry/entities/abilities/UnitSpawnAbility.java
index 8aeba22a11..c017c24631 100644
--- a/core/src/mindustry/entities/abilities/UnitSpawnAbility.java
+++ b/core/src/mindustry/entities/abilities/UnitSpawnAbility.java
@@ -31,7 +31,7 @@ public class UnitSpawnAbility extends Ability{
 
     @Override
     public void update(Unit unit){
-        timer += Time.delta;
+        timer += Time.delta * state.rules.unitBuildSpeedMultiplier;
 
         if(timer >= spawnTime && Units.canCreate(unit.team, type)){
             float x = unit.x + Angles.trnsx(unit.rotation, spawnY, spawnX), y = unit.y + Angles.trnsy(unit.rotation, spawnY, spawnX);