diff --git a/src/main/scala/li/cil/oc/integration/mfr/ConverterSafariNet.scala b/src/main/scala/li/cil/oc/integration/mfr/ConverterSafariNet.scala
index 2ead008c0..cf947bdc1 100644
--- a/src/main/scala/li/cil/oc/integration/mfr/ConverterSafariNet.scala
+++ b/src/main/scala/li/cil/oc/integration/mfr/ConverterSafariNet.scala
@@ -11,7 +11,7 @@ import scala.collection.convert.WrapAsScala._
 
 object ConverterSafariNet extends Converter {
   override def convert(value: scala.Any, output: util.Map[AnyRef, AnyRef]): Unit = value match {
-    case stack: ItemStack if stack.getItem.isInstanceOf[ItemSafariNet] =>
+    case stack: ItemStack if stack.getItem.isInstanceOf[ItemSafariNet] && stack.hasTagCompound =>
       val nbt = stack.getTagCompound
       if (nbt.hasKey("id", NBT.TAG_STRING) && !nbt.getBoolean("hide")) {
         output += "entity" -> nbt.getString("id")