diff --git a/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/centrifuge/CentrifugeKreport.scala b/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/centrifuge/CentrifugeKreport.scala
index 69ed9e5aaf4c83d8f022e1cedf4d79ff8796f930..c69bdd6926924687ec04ef3b1a16588ea01987d9 100644
--- a/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/centrifuge/CentrifugeKreport.scala
+++ b/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/centrifuge/CentrifugeKreport.scala
@@ -26,6 +26,8 @@ class CentrifugeKreport(val root: Configurable) extends BiopetCommandLineFunctio
   var minScore: Option[Double] = config("min_score")
   var minLength: Option[Int] = config("min_length")
 
+  override def defaultCoreMemory = 4.0
+
   executable = config("exe", default = "centrifuge-kreport", freeVar = false)
 
   def cmdLine = executable +