diff --git a/oslo_utils/timeutils.py b/oslo_utils/timeutils.py
index 4509da6b..2b38eadb 100644
--- a/oslo_utils/timeutils.py
+++ b/oslo_utils/timeutils.py
@@ -516,9 +516,11 @@ class StopWatch(object):
         return self.elapsed() > self._duration
 
     def has_started(self):
+        """Returns True if the watch is in a started state."""
         return self._state == self._STARTED
 
     def has_stopped(self):
+        """Returns True if the watch is in a stopped state."""
         return self._state == self._STOPPED
 
     def resume(self):