diff --git a/robotgame/level4.py b/robotgame/level4.py
index ef1c0aa..d01f781 100644
--- a/robotgame/level4.py
+++ b/robotgame/level4.py
@@ -118,8 +118,8 @@ class Level4(level.Level):
             self.objects.append(block.InvisBlock(self, i * 64,
                                                  self.size[1]))
         for i in range(self.dimensions[1]):
-            self.objects.append(block.InvisBlock(self, - 64, i * 48))
-            self.objects.append(block.InvisBlock(self, self.size[0], i * 48))
+            self.objects.append(block.InvisBlock(self, - 64, (i + 4) * 48))
+            self.objects.append(block.InvisBlock(self, self.size[0], (i + 4) * 48))
 
         self.generate_lasers()