diff --git a/Lib/doctest.py b/Lib/doctest.py
index 5dbd3d4..0b485f1 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -553,7 +553,7 @@
         # Want consists of any non-blank lines that do not start with PS1.
         (?P<want> (?:(?![ ]*$)    # Not a blank line
                      (?![ ]*>>>)  # Not a line starting with PS1
-                     .*$\n?       # But any other line
+                     .+$\n?       # But any other line
                   )*)
         ''', re.MULTILINE | re.VERBOSE)