diff --git a/config.h b/config.h
index 5c91fb4..027345a 100644
--- a/config.h
+++ b/config.h
@@ -48,6 +48,7 @@ static const Rule rules[] = {
 	/* class      instance    title       tags mask     isfloating   monitor */
 	{ "Gimp",     NULL,       NULL,       0,            1,           -1 },
 	{ "Firefox",  NULL,       NULL,       1 << 1,       0,           -1 },
+	{ "firefox",  NULL,       NULL,       1 << 1,       0,           -1 },
 	{ "discord",  NULL,       NULL,       1 << 2,       0,           -1 },
 	{ "Steam",    NULL,       NULL,       1 << 3,       0,           -1 },
 	{ "Lutris",   NULL,       NULL,       1 << 3,       0,           -1 },
@@ -85,6 +86,7 @@ static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn()
 static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_cyan, "-sf", col_gray4, NULL };
 static const char *roficmd[] = { "rofi", "-show", "run", "-font", "SourceCodePro 12" };
 static const char *termcmd[]  = { "alacritty", NULL };
+static const char *filecmd[]  = { "pcmanfm", NULL };
 static const char *browsercmd[]  = { "firefox", NULL };
 static const char *slockcmd[]  = { "slock", NULL };
 
@@ -92,7 +94,7 @@ static const char *slockcmd[]  = { "slock", NULL };
 void focusmaster(const Arg* arg);
 
 /* variables */
-static int gamingmodmask = MODKEY; /* mod keys to disable when gaming */
+static int gamingmodmask = ALTKEY|MODKEY; /* mod keys to disable when gaming */
 
 static Key togglegamingkey = { MODKEY|ControlMask, XK_g, togglegaming, {0} };
 
@@ -101,8 +103,9 @@ static Key keys[] = {
 	//{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
 	{ MODKEY,                       XK_space,  spawn,          {.v = roficmd } },
 	{ MODKEY,                       XK_Return, spawn,          {.v = termcmd } },
+	{ MODKEY,                       XK_e,      spawn,          {.v = filecmd } },
 	{ MODKEY,                       XK_b,      spawn,          {.v = browsercmd } },
-	{ MODKEY|ControlMask,           XK_l,      spawn,          {.v = slockcmd } },
+	{ MODKEY,                       XK_Escape, spawn,          {.v = slockcmd } },
 	{ MODKEY,                       XK_q,      spawn,          SHCMD("~/.config/wm_scripts/screenshot.sh") },
 	{ MODKEY|ShiftMask,             XK_q,      spawn,          SHCMD("~/.config/wm_scripts/all.sh") },
 	{ MODKEY|ControlMask,           XK_b,      togglebar,      {0} },