diff --git a/core/src/mindustry/service/GameService.java b/core/src/mindustry/service/GameService.java
index 87e2e2ee1b..7b31d10711 100644
--- a/core/src/mindustry/service/GameService.java
+++ b/core/src/mindustry/service/GameService.java
@@ -10,7 +10,6 @@ import mindustry.game.SectorInfo.*;
 import mindustry.gen.*;
 import mindustry.type.*;
 import mindustry.world.*;
-import mindustry.world.blocks.defense.*;
 import mindustry.world.blocks.defense.Wall.*;
 import mindustry.world.blocks.defense.turrets.Turret.*;
 import mindustry.world.blocks.distribution.*;
@@ -225,8 +224,8 @@ public class GameService{
                     }
                 }
 
-                if(e.tile.block() instanceof MendProjector || e.tile.block() instanceof RegenProjector) buildMendProjector.complete();
-                if(e.tile.block() instanceof OverdriveProjector) buildOverdriveProjector.complete();
+                if(e.tile.block() == Blocks.mendProjector) buildMendProjector.complete();
+                if(e.tile.block() == Blocks.overdriveProjector) buildOverdriveProjector.complete();
 
                 if(e.tile.block() == Blocks.waterExtractor){
                     if(e.tile.getLinkedTiles(tmpTiles).contains(t -> t.floor().liquidDrop == Liquids.water)){