1 files changed, 1 insertions, 1 deletions

diff --git a/test/headerstest.lua b/test/headerstest.lua
index 1387fc7..cbf638f 100644
--- a/test/headerstest.lua
+++ b/test/headerstest.lua
@@ -103,7 +103,7 @@ local check_canonic = function(lower, expected)
     if got ~= expected then
         print("canonic[" .. lower .. "] = " .. tostring(got) ..
             ", expected " .. expected)
-        os.exit()
+        os.exit(1)
     end
 end