diff --git a/oio/common/green.py b/oio/common/green.py
index 85d6431731..a336983421 100644
--- a/oio/common/green.py
+++ b/oio/common/green.py
@@ -77,7 +77,7 @@ def ratelimit(run_time, max_rate, increment=1, rate_buffer=5):
     time_per_request = clock_accuracy * (float(increment) / max_rate)
     if now - run_time > rate_buffer * clock_accuracy:
         run_time = now
-    elif run_time - now > time_per_request:
+    elif run_time - now > 0:
         sleep((run_time - now) / clock_accuracy)
     return run_time + time_per_request