diff --git a/src/main/scala/li/cil/oc/common/tileentity/traits/Environment.scala b/src/main/scala/li/cil/oc/common/tileentity/traits/Environment.scala
index e5c54fd31..edb323b63 100644
--- a/src/main/scala/li/cil/oc/common/tileentity/traits/Environment.scala
+++ b/src/main/scala/li/cil/oc/common/tileentity/traits/Environment.scala
@@ -19,7 +19,7 @@ trait Environment extends TileEntity with network.Environment with driver.Contai
 
   override def markChanged() = markDirty()
 
-  protected def isConnected = node.address != null && node.network != null
+  protected def isConnected = node != null && node.address != null && node.network != null
 
   // ----------------------------------------------------------------------- //