diff --git a/core/assets/maps/impact0079.mmap b/core/assets/maps/impact0079.mmap
index 0451d04b2a..9c45ae297c 100644
Binary files a/core/assets/maps/impact0079.mmap and b/core/assets/maps/impact0079.mmap differ
diff --git a/core/src/io/anuke/mindustry/editor/EditorTool.java b/core/src/io/anuke/mindustry/editor/EditorTool.java
index 08c95ded9c..ea40b3eb6d 100644
--- a/core/src/io/anuke/mindustry/editor/EditorTool.java
+++ b/core/src/io/anuke/mindustry/editor/EditorTool.java
@@ -14,8 +14,7 @@ import io.anuke.mindustry.world.Block;
 import io.anuke.mindustry.world.blocks.BlockPart;
 import io.anuke.mindustry.world.blocks.Floor;
 
-import static io.anuke.mindustry.Vars.content;
-import static io.anuke.mindustry.Vars.ui;
+import static io.anuke.mindustry.Vars.*;
 
 public enum EditorTool{
     pick{
@@ -139,6 +138,17 @@ public enum EditorTool{
                         }
                     }
                 }
+            }else if(isAlt2()){
+                for(int cx = 0; cx < width; cx++){
+                    for(int cy = 0; cy < height; cy++){
+                        byte w = data.read(cx, cy, DataPosition.wall);
+                        if(content.block(w).synthetic()){
+                            TileDataMarker prev = editor.getPrev(cx, cy, false);
+                            data.write(cx, cy, DataPosition.rotationTeam, (byte)editor.getDrawTeam().ordinal());
+                            editor.onWrite(cx, cy, prev);
+                        }
+                    }
+                }
             }else{
                 int x1;
                 boolean spanAbove, spanBelow;
@@ -202,6 +212,10 @@ public enum EditorTool{
         return Core.input.keyDown(KeyCode.TAB);
     }
 
+    public static boolean isAlt2(){
+        return Core.input.keyDown(KeyCode.GRAVE);
+    }
+
     public void touched(MapEditor editor, int x, int y){
 
     }