diff --git a/run_tests b/run_tests
index d42ef9d..16daba5 100755
--- a/run_tests
+++ b/run_tests
@@ -8,5 +8,5 @@ if check_redis_running; then
     /usr/bin/env python -m unittest discover -v -s tests $@ 2>&1 | egrep -v '^test_'
 else
     echo "Redis not running." >&2
-    return 2
+    exit 2
 fi