diff --git a/workflows/HBA_calibrator.cwl b/workflows/HBA_calibrator.cwl
index 26666fb62f3f3b9d140f31eaed52ac5e5e1872f5..c7f4f9ed06fe99b2cfb32ce4869fdc3feebf6247 100644
--- a/workflows/HBA_calibrator.cwl
+++ b/workflows/HBA_calibrator.cwl
@@ -77,12 +77,12 @@ inputs:
     'sbg:x': -1000
     'sbg:y': -400
   - id: solutions2transfer
-    type: File?
+    type: string?
     default: /data/solutions/3C48.h5
     'sbg:x': -1000
     'sbg:y': -300
   - id: antennas2transfer
-    type: File?
+    type: string?
     default: '[FUSPID].*'
     'sbg:x': -1000
     'sbg:y': -200
@@ -164,12 +164,12 @@ inputs:
     'sbg:x': -1000
     'sbg:y': 1300
   - id: calibrator_path_skymodel
-    type: Directory?
+    type: string?
     default: /data/skymodels
     'sbg:x': -1000
     'sbg:y': 1400
   - id: A-Team_skymodel
-    type: File?
+    type: string?
     default: /data/skymodels/Ateam_LBA_CC.skymodel
     'sbg:x': -1000
     'sbg:y': 1500
diff --git a/workflows/prefactor_calibrator.cwl b/workflows/prefactor_calibrator.cwl
index c0f901404d148ed9134b41dd2bdaf6cb35f3a570..2dda40da752105ceb888cb036ce5c0282a188237 100644
--- a/workflows/prefactor_calibrator.cwl
+++ b/workflows/prefactor_calibrator.cwl
@@ -77,12 +77,12 @@ inputs:
     'sbg:x': -1000
     'sbg:y': -400
   - id: solutions2transfer
-    type: File?
+    type: string?
     default: /data/solutions/3C48.h5
     'sbg:x': -1000
     'sbg:y': -300
   - id: antennas2transfer
-    type: File?
+    type: string?
     default: '[FUSPID].*'
     'sbg:x': -1000
     'sbg:y': -200
@@ -164,12 +164,12 @@ inputs:
     'sbg:x': -1000
     'sbg:y': 1300
   - id: calibrator_path_skymodel
-    type: Directory?
+    type: string?
     default: /data/skymodels
     'sbg:x': -1000
     'sbg:y': 1400
   - id: A-Team_skymodel
-    type: File?
+    type: string?
     default: /data/skymodels/Ateam_LBA_CC.skymodel
     'sbg:x': -1000
     'sbg:y': 1500
diff --git a/workflows/prefactor_calibrator/prep.cwl b/workflows/prefactor_calibrator/prep.cwl
index 7ec106915d247942c59bbb7e49439e3efc3f1f66..0b0b193e7772914173b5d50f876eadba3e065c24 100644
--- a/workflows/prefactor_calibrator/prep.cwl
+++ b/workflows/prefactor_calibrator/prep.cwl
@@ -71,7 +71,7 @@ inputs:
     'sbg:x': -1000
     'sbg:y': 600
   - id: A-Team_skymodel
-    type: File?
+    type: string?
     default: /data/skymodels/Ateam_LBA_CC.skymodel
     'sbg:x': -1000
     'sbg:y': 700