diff --git a/docxtpl/__main__.py b/docxtpl/__main__.py
index 0cb838b..2438419 100644
--- a/docxtpl/__main__.py
+++ b/docxtpl/__main__.py
@@ -65,7 +65,8 @@ def check_exists_ask_overwrite(arg_value, overwrite):
     # confirmed returns True, else raises FileExistsError.
     if os.path.exists(arg_value) and not overwrite:
         try:
-            if input('File %s already exists, would you like to overwrite the existing file? (y/n)' % arg_value).lower() == 'y':
+            msg = 'File %s already exists, would you like to overwrite the existing file? (y/n)' % arg_value
+            if input(msg).lower() == 'y':
                 return True
             else:
                 raise FileExistsError
diff --git a/tests/module_execute.py b/tests/module_execute.py
index c280600..e2ef28f 100644
--- a/tests/module_execute.py
+++ b/tests/module_execute.py
@@ -16,4 +16,4 @@ print('Executing "%s" ...' % cmd)
 os.system(cmd)
 
 if os.path.exists(OUTPUT_FILENAME):
-    print(f'    --> File %s has been generated.' % OUTPUT_FILENAME)
+    print('    --> File %s has been generated.' % OUTPUT_FILENAME)