diff --git a/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/picard/MarkDuplicates.scala b/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/picard/MarkDuplicates.scala
index 310d81d791a2d2cdd05b6429271eea036e427d37..33c2a0be9a6b8e65eec264c49919983397924bc4 100644
--- a/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/picard/MarkDuplicates.scala
+++ b/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/picard/MarkDuplicates.scala
@@ -24,7 +24,7 @@ import org.broadinstitute.gatk.utils.commandline.{ Argument, Input, Output }
 /** Extension for picard MarkDuplicates */
 class MarkDuplicates(val root: Configurable) extends Picard with Summarizable {
 
-  javaMainClass = new picard.sam.MarkDuplicates().getClass.getName
+  javaMainClass = new picard.sam.markduplicates.MarkDuplicates().getClass.getName
 
   @Input(doc = "The input SAM or BAM files to analyze.  Must be coordinate sorted.", required = true)
   var input: List[File] = Nil