diff --git a/README.md b/README.md
index a7498b0..94d710c 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,7 @@
 dwm
 ===
 Vilor's dwm based on [dwm 6.4](README.dwm.md)
+
+Used patches
+------------
+* systray
diff --git a/config.def.h b/config.def.h
index 812041b..beee325 100644
--- a/config.def.h
+++ b/config.def.h
@@ -94,46 +94,52 @@ static const char *togglevolcmd[] =
 /* toggle microphone */
 static const char *togglemiccmd[] =
 { "/usr/bin/amixer", "set", "Capture", "toggle", NULL };
+/* brightness up */
+static const char *brightness_up[]  =   { "xbacklight", "-inc", "10", NULL };
+/* brightness down */
+static const char *brightness_down[]  = { "xbacklight", "-dec", "10", NULL };
 
 static const Key keys[] = {
-	/* modifier                     key        function        argument */
-	{ 0,                            XF86XK_AudioRaiseVolume, spawn,        { .v = upvolcmd }   },
-	{ 0,                            XF86XK_AudioLowerVolume, spawn,        { .v = downvolcmd } },
-	{ 0,                            XF86XK_AudioMute, spawn,               { .v = togglevolcmd } },
-	{ 0,                            XF86XK_AudioMicMute, spawn,            { .v = togglemiccmd } },
-	{ MODKEY,                       XK_p,      spawn,          {.v = roficmd } },
-	{ MODKEY|ShiftMask,             XK_Return, spawn,          {.v = termcmd } },
-	{ MODKEY,                       XK_b,      togglebar,      {0} },
-	{ MODKEY,                       XK_j,      focusstack,     {.i = +1 } },
-	{ MODKEY,                       XK_k,      focusstack,     {.i = -1 } },
-	{ MODKEY,                       XK_i,      incnmaster,     {.i = +1 } },
-	{ MODKEY,                       XK_d,      incnmaster,     {.i = -1 } },
-	{ MODKEY,                       XK_h,      setmfact,       {.f = -0.05} },
-	{ MODKEY,                       XK_l,      setmfact,       {.f = +0.05} },
-	{ MODKEY,                       XK_Return, zoom,           {0} },
-	{ MODKEY,                       XK_Tab,    view,           {0} },
-	{ MODKEY|ShiftMask,             XK_c,      killclient,     {0} },
-	{ MODKEY,                       XK_t,      setlayout,      {.v = &layouts[0]} },
-	{ MODKEY,                       XK_f,      setlayout,      {.v = &layouts[1]} },
-	{ MODKEY,                       XK_m,      setlayout,      {.v = &layouts[2]} },
-	{ MODKEY,                       XK_space,  setlayout,      {0} },
-	{ MODKEY|ShiftMask,             XK_space,  togglefloating, {0} },
-	{ MODKEY,                       XK_0,      view,           {.ui = ~0 } },
-	{ MODKEY|ShiftMask,             XK_0,      tag,            {.ui = ~0 } },
-	{ MODKEY,                       XK_comma,  focusmon,       {.i = -1 } },
-	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
-	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
-	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
-	TAGKEYS(                        XK_1,                      0)
-	TAGKEYS(                        XK_2,                      1)
-	TAGKEYS(                        XK_3,                      2)
-	TAGKEYS(                        XK_4,                      3)
-	TAGKEYS(                        XK_5,                      4)
-	TAGKEYS(                        XK_6,                      5)
-	TAGKEYS(                        XK_7,                      6)
-	TAGKEYS(                        XK_8,                      7)
-	TAGKEYS(                        XK_9,                      8)
-	{ MODKEY|ShiftMask,             XK_q,      quit,           {0} },
+	/* modifier          key        function        argument */
+	{ 0,                 XF86XK_AudioRaiseVolume,  spawn, { .v = upvolcmd }        },
+	{ 0,                 XF86XK_AudioLowerVolume,  spawn, { .v = downvolcmd }      },
+	{ 0,                 XF86XK_AudioMute,         spawn, { .v = togglevolcmd }    },
+	{ 0,                 XF86XK_AudioMicMute,      spawn, { .v = togglemiccmd }    },
+	{ 0,                 XF86XK_MonBrightnessUp,   spawn, { .v = brightness_up }   },
+	{ 0,                 XF86XK_MonBrightnessDown, spawn, { .v = brightness_down } },
+	{ MODKEY,            XK_p,      spawn,          {.v = roficmd } },
+	{ MODKEY|ShiftMask,  XK_Return, spawn,          {.v = termcmd } },
+	{ MODKEY,            XK_b,      togglebar,      {0} },
+	{ MODKEY,            XK_j,      focusstack,     {.i = +1 } },
+	{ MODKEY,            XK_k,      focusstack,     {.i = -1 } },
+	{ MODKEY,            XK_i,      incnmaster,     {.i = +1 } },
+	{ MODKEY,            XK_d,      incnmaster,     {.i = -1 } },
+	{ MODKEY,            XK_h,      setmfact,       {.f = -0.05} },
+	{ MODKEY,            XK_l,      setmfact,       {.f = +0.05} },
+	{ MODKEY,            XK_Return, zoom,           {0} },
+	{ MODKEY,            XK_Tab,    view,           {0} },
+	{ MODKEY|ShiftMask,  XK_c,      killclient,     {0} },
+	{ MODKEY,            XK_t,      setlayout,      {.v = &layouts[0]} },
+	{ MODKEY,            XK_f,      setlayout,      {.v = &layouts[1]} },
+	{ MODKEY,            XK_m,      setlayout,      {.v = &layouts[2]} },
+	{ MODKEY,            XK_space,  setlayout,      {0} },
+	{ MODKEY|ShiftMask,  XK_space,  togglefloating, {0} },
+	{ MODKEY,            XK_0,      view,           {.ui = ~0 } },
+	{ MODKEY|ShiftMask,  XK_0,      tag,            {.ui = ~0 } },
+	{ MODKEY,            XK_comma,  focusmon,       {.i = -1 } },
+	{ MODKEY,            XK_period, focusmon,       {.i = +1 } },
+	{ MODKEY|ShiftMask,  XK_comma,  tagmon,         {.i = -1 } },
+	{ MODKEY|ShiftMask,  XK_period, tagmon,         {.i = +1 } },
+	TAGKEYS(             XK_1,                      0)
+	TAGKEYS(             XK_2,                      1)
+	TAGKEYS(             XK_3,                      2)
+	TAGKEYS(             XK_4,                      3)
+	TAGKEYS(             XK_5,                      4)
+	TAGKEYS(             XK_6,                      5)
+	TAGKEYS(             XK_7,                      6)
+	TAGKEYS(             XK_8,                      7)
+	TAGKEYS(             XK_9,                      8)
+	{ MODKEY|ShiftMask,  XK_q,      quit,           {0} },
 };
 
 /* button definitions */