diff --git a/mercurial/ui.py b/mercurial/ui.py
--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -1553,7 +1553,7 @@
                         raise EOFError
                     return l.rstrip('\n')
                 else:
-                    return getpass.getpass('')
+                    return getpass.getpass(r'')
         except EOFError:
             raise error.ResponseExpected()