diff --git a/delly.wdl b/delly.wdl
index efa1bf60d7be4483f00607c66250b8247d49b7e0..f708f4949fa74743e3655ab8d8c0e292ac0050c9 100644
--- a/delly.wdl
+++ b/delly.wdl
@@ -28,7 +28,7 @@ task CallSV {
         File bamIndex
         File referenceFasta
         File referenceFastaFai
-        String outputPath = "./delly/delly.vcf"
+        String outputPath = "./delly/delly.bcf"
 
         String memory = "15G"
         Int timeMinutes = 300