diff --git a/roles/home-gui/files/gnome-setup.sh b/roles/home-gui/files/gnome-setup.sh
index 20dbaf9..5ebb99e 100644
--- a/roles/home-gui/files/gnome-setup.sh
+++ b/roles/home-gui/files/gnome-setup.sh
@@ -254,6 +254,10 @@ set_misc_preferences () {
         $_acp_gsettings set org.gnome.Epiphany.web:/org/gnome/epiphany/web/ remember-passwords false
         unset _acp_gsettings
     fi
+
+    # Mute the microphone with M-/ shortcut.
+    gsettings set org.gnome.settings-daemon.plugins.media-keys mic-mute "['<Super>slash']"
+
 }
 set_misc_preferences