diff --git a/test/regression.py b/test/regression.py
index b1d4f7de..0cce6f29 100755
--- a/test/regression.py
+++ b/test/regression.py
@@ -206,6 +206,11 @@ class TestRegression(Base):
         else:
             assert len(self.complete(s))
 
+    def test_os_nowait(self):
+        s = self.complete("import os; os.P_")
+        assert 'P_NOWAIT' in [i.word for i in s]
+
+
 class TestSpeed(Base):
     def _check_speed(time_per_run, number=10):
         """ Speed checks should typically be very tolerant. Some machines are