diff --git a/workflows/prefactor_calibrator.cwl b/workflows/prefactor_calibrator.cwl
index 55e36d986293cec07f7b503e5dbab0f565fc0123..00ffb600b229dc7ff46745844248aae0553417ab 100644
--- a/workflows/prefactor_calibrator.cwl
+++ b/workflows/prefactor_calibrator.cwl
@@ -55,8 +55,8 @@ inputs:
     'sbg:x': -89
     'sbg:y': -276
   - id: min_separation
-    type: float
-    default: 20.
+    type: int
+    default: 20
     'sbg:x': -638.4987182617188
     'sbg:y': 31.238996505737305
   - id: A-Team_sky_model