Software-properties-gtk offers to install driver but it not needed

software-properties-gtk in tab "additional drivers" offers to install driver for WLAN Controller BCM4313 802.11b/g/n but driver not needed. WLAN working fine without this driver.
$ lspci
05:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
$ iwconfig
wlan0 IEEE 802.11bgn ESSID:"simpleApps"
          Mode:Managed Frequency:2.437 GHz Access Point: 60:A4:4C:56:20:D2
          Bit Rate=54 Mb/s Tx-Power=27 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=59/70 Signal level=-51 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:203 Invalid misc:61288 Missed beacon:0