diff --git a/carp/src/main/scala/nl/lumc/sasc/biopet/pipelines/carp/Carp.scala b/carp/src/main/scala/nl/lumc/sasc/biopet/pipelines/carp/Carp.scala
index 8d3e47bdd9182a24d493c9083944f2fe98dc5287..d6b0f8c1d4f96a3c5af267341336cc8d0f2c452f 100644
--- a/carp/src/main/scala/nl/lumc/sasc/biopet/pipelines/carp/Carp.scala
+++ b/carp/src/main/scala/nl/lumc/sasc/biopet/pipelines/carp/Carp.scala
@@ -58,7 +58,7 @@ class Carp(val root: Configurable) extends QScript with MultisampleMappingTrait
   override def makeSample(id: String) = new Sample(id)
   class Sample(sampleId: String) extends super.Sample(sampleId) {
 
-    override def preProcessBam = Some(createFile(".filter.bam"))
+    override def preProcessBam = Some(createFile("filter.bam"))
 
     val controls: List[String] = config("control", default = Nil)