diff --git a/public/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/sambamba/Sambamba.scala b/public/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/sambamba/Sambamba.scala
index 17894a8154915e4dd7e0ec995d638b2e8d68182d..6da7c3ed11c0c589adc3863be9e15cb671056b55 100644
--- a/public/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/sambamba/Sambamba.scala
+++ b/public/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/sambamba/Sambamba.scala
@@ -19,7 +19,7 @@ import nl.lumc.sasc.biopet.core.{BiopetCommandLineFunction, Version}
 
 /** General Sambamba extension */
 abstract class Sambamba extends BiopetCommandLineFunction with Version {
-  override def defaultCoreMemory = 2.0
+  override def defaultCoreMemory = 4.0
   override def defaultThreads = 2
 
   override def subPath = "sambamba" :: super.subPath
diff --git a/public/gears/src/main/scala/nl/lumc/sasc/biopet/pipelines/gears/Gears.scala b/public/gears/src/main/scala/nl/lumc/sasc/biopet/pipelines/gears/Gears.scala
index d25d04f8411545bb05cf099dc1cd177b18590009..aabbedb8629246b1695387125ae508d66bd12252 100644
--- a/public/gears/src/main/scala/nl/lumc/sasc/biopet/pipelines/gears/Gears.scala
+++ b/public/gears/src/main/scala/nl/lumc/sasc/biopet/pipelines/gears/Gears.scala
@@ -73,14 +73,13 @@ class Gears(val root: Configurable) extends QScript with SummaryQScript with Sam
   def biopetScript(): Unit = {
     val fastqFiles: List[File] = bamFile.map { bamfile =>
 
-//      // sambamba view -f bam -F "unmapped or mate_is_unmapped" <alnFile> > <extracted.bam>
-//      val samFilterUnmapped = new SambambaView(this)
-//      samFilterUnmapped.input = bamfile
-//      samFilterUnmapped.filter = Some("(unmapped or mate_is_unmapped) and not (secondary_alignment) and [XH] == null")
-//      samFilterUnmapped.output = new File(outputDir, s"$outputName.unmapped.bam")
-//      samFilterUnmapped.isIntermediate = false
-//      add(samFilterUnmapped)
-
+      //      // sambamba view -f bam -F "unmapped or mate_is_unmapped" <alnFile> > <extracted.bam>
+      //      val samFilterUnmapped = new SambambaView(this)
+      //      samFilterUnmapped.input = bamfile
+      //      samFilterUnmapped.filter = Some("(unmapped or mate_is_unmapped) and not (secondary_alignment) and [XH] == null")
+      //      samFilterUnmapped.output = new File(outputDir, s"$outputName.unmapped.bam")
+      //      samFilterUnmapped.isIntermediate = false
+      //      add(samFilterUnmapped)
 
       val samtoolsViewSelectUnmapped = new SamtoolsView(this)
       samtoolsViewSelectUnmapped.input = bamfile