diff --git a/rc.lua b/rc.lua
index 4dfb8fe..d878e78 100644
--- a/rc.lua
+++ b/rc.lua
@@ -238,7 +238,7 @@ globalkeys = gears.table.join(
         { description = "view previous", group = "tag" }),
     awful.key({ modkey, "Shift" }, "Right", awful.tag.viewnext,
         { description = "view next", group = "tag" }),
-    awful.key({ modkey, }, "y", awful.tag.history.restore,
+    awful.key({ modkey, }, "a", awful.tag.history.restore,
         { description = "go back", group = "tag" }),
 
     awful.key({ modkey, }, "j",
@@ -291,9 +291,9 @@ globalkeys = gears.table.join(
         { description = "increase master width factor", group = "layout" }),
     awful.key({ modkey, }, "h", function() awful.tag.incmwfact(-0.05) end,
         { description = "decrease master width factor", group = "layout" }),
-    awful.key({ modkey, "Shift" }, "h", function() awful.tag.incnmaster(1, nil, true) end,
+    awful.key({ modkey, }, "u", function() awful.tag.incnmaster(1, nil, true) end,
         { description = "increase the number of master clients", group = "layout" }),
-    awful.key({ modkey, "Shift" }, "l", function() awful.tag.incnmaster(-1, nil, true) end,
+    awful.key({ modkey, }, "y", function() awful.tag.incnmaster(-1, nil, true) end,
         { description = "decrease the number of master clients", group = "layout" }),
     awful.key({ modkey, "Control" }, "h", function() awful.tag.incncol(1, nil, true) end,
         { description = "increase the number of columns", group = "layout" }),