diff --git a/src/python/oftest/controller.py b/src/python/oftest/controller.py
index 7f4196b..2b47d2a 100644
--- a/src/python/oftest/controller.py
+++ b/src/python/oftest/controller.py
@@ -426,6 +426,7 @@
             return (None, None)
 
         # Careful of race condition releasing sync before message cv
+        # Also, this style is ripe for a lockup.
         self.expect_msg_cv.acquire()
         self.sync.release()
         self.expect_msg = True