diff --git a/zipline/sources/simulated.py b/zipline/sources/simulated.py
index aa515260..6db0f5bb 100644
--- a/zipline/sources/simulated.py
+++ b/zipline/sources/simulated.py
@@ -122,7 +122,7 @@ class RandomWalkSource(DataSource):
             current_dt = copy(open_dt)
             if self.freq == 'minute':
                 # Emit minutely trade signals from open to close
-                while current_dt < close_dt:
+                while current_dt <= close_dt:
                     for event in self._gen_events(cur_prices, current_dt):
                         yield event
                     current_dt += timedelta(minutes=1)