diff --git a/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/tools/FastqSync.scala b/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/tools/FastqSync.scala
index 2b44e6300e844f9c0827901c66ff3cba464dcb4c..675ba571cf054e677e988ff74c6c9fa4903f8035 100644
--- a/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/tools/FastqSync.scala
+++ b/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/tools/FastqSync.scala
@@ -50,7 +50,8 @@ class FastqSync(val root: Configurable) extends BiopetJavaCommandLineFunction wi
   @Output(doc = "Sync statistics", required = true)
   var outputStats: File = null
 
-  override val defaultVmem = "5G"
+  override val defaultVmem = "4G"
+  memoryLimit = Some(1.7)
 
   // executed command line
   override def commandLine =