diff --git a/dvc/prompt.py b/dvc/prompt.py
index 359114d2c..ccf1c6251 100644
--- a/dvc/prompt.py
+++ b/dvc/prompt.py
@@ -7,7 +7,7 @@ except NameError:
     pass
 
 
-def prompt(msg, default=False):
+def prompt(msg, default=False):  # pragma: no cover
     if not sys.stdout.isatty():
         return default