diff --git a/greentest/test_thread__boundedsem.py b/greentest/test_thread__boundedsem.py
new file mode 100644
index 0000000..7cd00c6
--- /dev/null
+++ b/greentest/test_thread__boundedsem.py
@@ -0,0 +1,11 @@
+"""Test that BoundedSemaphore with a very high bound is as good as unbounded one"""
+from eventlet import coros
+from eventlet.green import thread
+
+def allocate_lock():
+    return coros.semaphore(1, 9999)
+
+thread.allocate_lock = allocate_lock
+thread.LockType = coros.BoundedSemaphore
+
+execfile('test_thread.py')