diff --git a/subworkflow/pol_align.cwl b/subworkflow/pol_align.cwl
index 808e4fa193fdf98be78c1067f6f12b7c7ffa4dc0..33743b6623326dc1f3231395429d9eb44ba43a82 100644
--- a/subworkflow/pol_align.cwl
+++ b/subworkflow/pol_align.cwl
@@ -8,6 +8,7 @@ $namespaces:
 inputs:
   - id: refAnt
     type: string?
+    default: 'CS001HBA0'
     'sbg:x': -451.3746643066406
     'sbg:y': -493.92510986328125
   - id: input_h5parm
@@ -16,6 +17,7 @@ inputs:
     'sbg:y': -316.5615234375
   - id: fit_offset_PA
     type: boolean?
+    default: false
     'sbg:x': -743.1871948242188
     'sbg:y': -316.5615234375
 outputs: