Wireshark app associated with Safari on OS X

I have a problem of the pop-up window saying that Wireshark is open, its window can be.... In fact it was my mistake when I firstly run Wireshark, I clicked "Safari" when it asked to select application. I didn't look carefully the question "Where is X11?' Since then, as soon as I open Wireshark, Safari opens and the pop-up window appears. I did above procedure and one I succeeded to run correctly Wireshark, but still if I double click simply Wireshark, still Safari opens (but no more pop up window)

How can I restore it or uninstall completely so as to install again?