diff --git a/pager.py b/pager.py
index 714c3db..7086aef 100755
--- a/pager.py
+++ b/pager.py
@@ -50,7 +50,7 @@
     _BecomePager(pager)
   except Exception:
     print >>sys.stderr, "fatal: cannot start pager '%s'" % pager
-    os.exit(255)
+    sys.exit(255)
 
 def _SelectPager(globalConfig):
   try: