diff --git a/core/src/mindustry/world/blocks/units/UnitAssembler.java b/core/src/mindustry/world/blocks/units/UnitAssembler.java
index d05294fa65..c1f0bbd926 100644
--- a/core/src/mindustry/world/blocks/units/UnitAssembler.java
+++ b/core/src/mindustry/world/blocks/units/UnitAssembler.java
@@ -94,7 +94,7 @@ public void setBars(){
         super.setBars();
 
         addBar("progress", (UnitAssemblerBuild e) -> new Bar(
-            () -> Core.bundle.format("bar.progresstime", UI.formatTime(e.plan().time * (1 - e.progress))),
+            () -> Core.bundle.format("bar.progresstime", UI.formatTime(e.plan().time * (1 - e.progress) / e.timeScale() / state.rules.unitBuildSpeedMultiplier)),
             () -> Pal.ammo,
             () -> e.progress));