diff --git a/tools/run-tests b/tools/run-tests
index 482c7181..1611d708 100755
--- a/tools/run-tests
+++ b/tools/run-tests
@@ -66,3 +66,4 @@ for test in selectedTests:
 		shutil.rmtree(tmp)
 
 print passCount, 'tests passed. ', failCount, 'tests failed.'
+exit(failCount)