diff --git a/src/main/scala/li/cil/oc/common/tileentity/traits/RedstoneAware.scala b/src/main/scala/li/cil/oc/common/tileentity/traits/RedstoneAware.scala
index 609caf2cf..c2a356322 100644
--- a/src/main/scala/li/cil/oc/common/tileentity/traits/RedstoneAware.scala
+++ b/src/main/scala/li/cil/oc/common/tileentity/traits/RedstoneAware.scala
@@ -80,7 +80,7 @@ trait RedstoneAware extends RotationAware {
 
   def getOutput: Array[Int] = EnumFacing.values.map{ side: EnumFacing => _output(toLocal(side).ordinal) }
 
-  def getOutput(side: EnumFacing) = if (_output != null && _output.length >= toLocal(side).ordinal())
+  def getOutput(side: EnumFacing) = if (_output != null && _output.length > toLocal(side).ordinal())
     _output(toLocal(side).ordinal())
   else 0