diff --git a/server/site_tests/cheets_CTS_N/cheets_CTS_N.py b/server/site_tests/cheets_CTS_N/cheets_CTS_N.py
index f4744ea..141cf3c 100644
--- a/server/site_tests/cheets_CTS_N/cheets_CTS_N.py
+++ b/server/site_tests/cheets_CTS_N/cheets_CTS_N.py
@@ -418,7 +418,7 @@
             # The DUT has rebooted at this point and is in a clean state.
 
         # Final classification of test results.
-        if total_passed == 0 or failed > waived:
+        if total_passed + waived == 0 or failed > waived:
             raise error.TestFail(
                 'Failed: after %d retries giving up. '
                 'passed=%d, failed=%d, notexecuted=%d, waived=%d. %s' %