3 files changed, 3 insertions, 3 deletions

diff --git a/test/smtptest.lua b/test/smtptest.lua
index 9d06054..e04dea6 100644
--- a/test/smtptest.lua
+++ b/test/smtptest.lua
@@ -35,7 +35,7 @@ end
 local fail = function(s)
     s = s or "failed!"
     print(s)
-    os.exit()
+    os.exit(1)
 end
 
 local readfile = function(name)
diff --git a/test/testclnt.lua b/test/testclnt.lua
index bbe48bb..ae97204 100644
--- a/test/testclnt.lua
+++ b/test/testclnt.lua
@@ -16,7 +16,7 @@ function fail(...)
     io.stderr:write("ERROR: ")
     printf(...)
     io.stderr:write("!\n")
-    os.exit()
+    os.exit(1)
 end
 
 function warn(...)
diff --git a/test/utestclnt.lua b/test/utestclnt.lua
index 395260c..7f74f99 100644
--- a/test/utestclnt.lua
+++ b/test/utestclnt.lua
@@ -12,7 +12,7 @@ function fail(...)
     local s = string.format(...)
     io.stderr:write("ERROR: ", s, "!\n")
 socket.sleep(3)
-    os.exit()
+    os.exit(1)
 end
 
 function warn(...)