diff --git a/public/shiva/src/main/scala/nl/lumc/sasc/biopet/pipelines/shiva/ShivaVariantcallingTrait.scala b/public/shiva/src/main/scala/nl/lumc/sasc/biopet/pipelines/shiva/ShivaVariantcallingTrait.scala
index e0edf52ce238c0ed2855099d1f10d6bddd8883d6..ea46e04b991496fe4bda88335fa1f6d2097d6af3 100644
--- a/public/shiva/src/main/scala/nl/lumc/sasc/biopet/pipelines/shiva/ShivaVariantcallingTrait.scala
+++ b/public/shiva/src/main/scala/nl/lumc/sasc/biopet/pipelines/shiva/ShivaVariantcallingTrait.scala
@@ -101,6 +101,7 @@ trait ShivaVariantcallingTrait extends SummaryQScript with SampleLibraryTag {
       fb.isIntermediate = true
       add(fb)
 
+      //TODO: need piping for this
       val bz = new Bgzip(qscript)
       bz.input = List(fb.outputVcf)
       bz.output = outputFile