diff --git a/workflows/prefactor_calibrator.cwl b/workflows/prefactor_calibrator.cwl
index a3bf0707053a344eebc44341b976e5284cb99711..c0f901404d148ed9134b41dd2bdaf6cb35f3a570 100644
--- a/workflows/prefactor_calibrator.cwl
+++ b/workflows/prefactor_calibrator.cwl
@@ -279,9 +279,6 @@ steps:
       - id: parset
     run: ./prefactor_calibrator/prep.cwl
     label: prep
-    scatter:
-      - msin
-    scatterMethod: flat_crossproduct
     'sbg:x': 0
     'sbg:y': 0
 requirements: