-rofi = Popen(["rofi", "-i", "-dmenu", "-l", str(lines), "-p", "connection: "], stdout=PIPE, stdin=PIPE)
-selected = rofi.communicate("\n".join(fdict.keys()).encode("utf-8"))[0].decode("utf-8").strip()
+width = len(max(fdict.keys(), key=len))
+rofi = Popen(["rofi", "-i", "-dmenu", \
+ "-l", str(lines), "-width", str(width), \
+ "-p", "connection"], stdout=PIPE, stdin=PIPE)
+selected = rofi.communicate("\n" \
+ .join(fdict.keys()) \
+ .encode("utf-8"))[0] \
+ .decode("utf-8") \
+ .strip()