diff --git a/block/networking/BlockCableBus.java b/block/networking/BlockCableBus.java
index 608feca0..a135bba6 100644
--- a/block/networking/BlockCableBus.java
+++ b/block/networking/BlockCableBus.java
@@ -54,7 +54,7 @@ public class BlockCableBus extends AEBaseBlock
 		if ( noTesrTile.isInstance( te ) )
 			return (T) te;
 
-		if ( tesrTile.isInstance( te ) )
+		if ( tesrTile != null && tesrTile.isInstance( te ) )
 			return (T) te;
 
 		return null;