diff --git a/src/main/scala/li/cil/oc/common/tileentity/traits/TileEntity.scala b/src/main/scala/li/cil/oc/common/tileentity/traits/TileEntity.scala
index 40a9d570a..7cd0d97db 100644
--- a/src/main/scala/li/cil/oc/common/tileentity/traits/TileEntity.scala
+++ b/src/main/scala/li/cil/oc/common/tileentity/traits/TileEntity.scala
@@ -21,9 +21,9 @@ trait TileEntity extends net.minecraft.tileentity.TileEntity {
 
   def block = getBlockType
 
-  val isClient = FMLCommonHandler.instance.getEffectiveSide.isClient
+  def isClient = FMLCommonHandler.instance.getEffectiveSide.isClient
 
-  val isServer = FMLCommonHandler.instance.getEffectiveSide.isServer
+  def isServer = FMLCommonHandler.instance.getEffectiveSide.isServer
 
   // ----------------------------------------------------------------------- //