diff --git a/bbs_math.lua b/bbs_math.lua
index 234b1e6..d588b01 100644
--- a/bbs_math.lua
+++ b/bbs_math.lua
@@ -93,7 +93,7 @@ else
             break
         end
         strval = string.byte(_data)
-        if strval == 13 or strval == 0 then
+        if strval == 13 or strval == 0 or strval == nil then
             -- ngx.say("read done")
             break
         else
@@ -160,7 +160,7 @@ elseif tonumber(res) then
 -- The answer did not contain a number, so we're assuming it is nonsensical.
 else
     -- Tell the user to give us a sensible answer next time.
-    ngx.say("\r\n\rBLEEP! Try entering an actual number next time!\r\n\r")
+    ngx.say("\r\n\rBLEEP! Try entering an actual number next time! ", tostring(res), "\r\n\r")
     -- Wait for a few seconds (to slow down bots that hammer us)
     ngx.sleep(3)
     -- Exit with 403 (which is meaningless here, but the ngx.exit() function