diff --git a/src/calibre/utils/copy_files.py b/src/calibre/utils/copy_files.py
index d68d1a1f55..66948e92c6 100644
--- a/src/calibre/utils/copy_files.py
+++ b/src/calibre/utils/copy_files.py
@@ -225,11 +225,9 @@ def copy_tree(
     with copier:
         copier.copy_all()
 
-    if delete_source:
+    if delete_source and os.path.exists(make_long_path_useable(src)):
         try:
             shutil.rmtree(make_long_path_useable(src))
-        except FileNotFoundError:
-            pass
         except OSError:
             if iswindows:
                 time.sleep(WINDOWS_SLEEP_FOR_RETRY_TIME)