diff --git a/lofar-cwl/steps/DP3.ApplyCalStepGenerator.cwl b/lofar-cwl/steps/DP3.ApplyCalStepGenerator.cwl
index 4ddf0328321c4aede1b91861df13cd5784e6a0cc..284487d13a0f8d04c009ff2891f64769ccacbfb9 100755
--- a/lofar-cwl/steps/DP3.ApplyCalStepGenerator.cwl
+++ b/lofar-cwl/steps/DP3.ApplyCalStepGenerator.cwl
@@ -90,8 +90,6 @@ steps:
     in:
       - id: step_type
         default: 'applycal'
-      - id: output_files
-        default: ["parmdb"]
       - id: step_id
         source: step_name
       - id: steps
diff --git a/lofar-cwl/steps/DP3.GenericStep.cwl b/lofar-cwl/steps/DP3.GenericStep.cwl
index 38829da42ed0deaac51bcf92c7c105e9139d4108..3c1a3031ced711121601e381e73ca08303a07a6f 100755
--- a/lofar-cwl/steps/DP3.GenericStep.cwl
+++ b/lofar-cwl/steps/DP3.GenericStep.cwl
@@ -39,7 +39,7 @@ expression: |-
    delete inputs.parameters.steps;
    delete inputs.parameters.parameters;
    delete inputs.parameters.steps;
-
+   delete inputs.parameters.output_files;
 
    var new_step = {'step_type': step_type,
                    'step_id': step_id,