diff --git a/scripts/wk/clone/ddrescue.py b/scripts/wk/clone/ddrescue.py
index 43834004..ce5d60c5 100644
--- a/scripts/wk/clone/ddrescue.py
+++ b/scripts/wk/clone/ddrescue.py
@@ -649,11 +649,13 @@ def zero_fill_gaps(
     ) -> None:
   """Zero-fill any gaps on the destination."""
   #fake_settings_menu = menus.settings(state.mode)
-  full_disk_clone = False
+  full_disk_clone = bool(
+    state.mode == 'Clone'
+    and len(state.block_pairs) == 1
+    and not state.source.parent
+    )
   larger_destination = state.source.size < dest_size
   percent_recovered = state.get_percent_recovered()
-  if state.mode == 'Clone' and len(state.block_pairs) == 1:
-    full_disk_clone = True
 
   # Bail early
   if percent_recovered == 100 and not (larger_destination and extend_to_end):