cyanogenmod - Disable Internet access detection of WiFi networks?

In fact my WiFi DO HAVE Internet access, but for some reason it keeps telling me I don't and won't automatically reconnect to it. Now I have to manually reconnect every time.

So, is it possible to disable Internet access detection of WiFi networks?

I'm using CyanogenMod 12.1.

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I've tried disabling captive portal detection, still no luck.