diff --git a/public/gwas-test/src/main/scala/nl/lumc/sasc/biopet/pipelines/gwastest/GwasTest.scala b/public/gwas-test/src/main/scala/nl/lumc/sasc/biopet/pipelines/gwastest/GwasTest.scala
index 9ee6d59525af89650a5e4d4812ecdad5df4dee6c..d65b658f3efa0c6e620e68f5e2a45b220580abe3 100644
--- a/public/gwas-test/src/main/scala/nl/lumc/sasc/biopet/pipelines/gwastest/GwasTest.scala
+++ b/public/gwas-test/src/main/scala/nl/lumc/sasc/biopet/pipelines/gwastest/GwasTest.scala
@@ -50,6 +50,8 @@ class GwasTest(val root: Configurable) extends QScript with BiopetQScript with R
 
   override def dictRequired = true
 
+  override def defaults = Map("snptest" -> Map("genotype_field" -> "GP"))
+
   /** Init for pipeline */
   def init(): Unit = {
     inputGens.foreach { g =>