diff --git a/picard.wdl b/picard.wdl
index c3edfe44233507583922713dd86c3c728642f8d0..7c360ba2f185801062c7a104284933eca0fdfdf3 100644
--- a/picard.wdl
+++ b/picard.wdl
@@ -111,7 +111,7 @@ task CollectRnaSeqMetrics {
 
     output {
         File chart = basename + ".RNA_Metrics.pdf"
-        File metrics = basename + "RNA_Metrics"
+        File metrics = basename + ".RNA_Metrics"
     }
 
     runtime {