diff --git a/desktop-shell/shell.c b/desktop-shell/shell.c
index 474d118f..6f1c1672 100644
--- a/desktop-shell/shell.c
+++ b/desktop-shell/shell.c
@@ -610,6 +610,8 @@ get_modifier(char *modifier)
 		return MODIFIER_ALT;
 	else if (!strcmp("super", modifier))
 		return MODIFIER_SUPER;
+	else if (!strcmp("none", modifier))
+		return 0;
 	else
 		return MODIFIER_SUPER;
 }
@@ -660,10 +662,7 @@ shell_configuration(struct desktop_shell *shell)
 
 	weston_config_section_get_string(section,
 					 "exposay-modifier", &s, "none");
-	if (strcmp(s, "none") == 0)
-		shell->exposay_modifier = 0;
-	else
-		shell->exposay_modifier = get_modifier(s);
+	shell->exposay_modifier = get_modifier(s);
 	free(s);
 
 	weston_config_section_get_string(section, "animation", &s, "none");
@@ -6452,9 +6451,20 @@ shell_add_bindings(struct weston_compositor *ec, struct desktop_shell *shell)
 	weston_compositor_add_axis_binding(ec, WL_POINTER_AXIS_VERTICAL_SCROLL,
 					   MODIFIER_SUPER, zoom_axis_binding,
 					   NULL);
+	weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSDOWN, 0,
+				          backlight_binding, ec);
+	weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSUP, 0,
+				          backlight_binding, ec);
 
 	/* configurable bindings */
+	if (shell->exposay_modifier)
+		weston_compositor_add_modifier_binding(ec, shell->exposay_modifier,
+						       exposay_binding, shell);
+
 	mod = shell->binding_modifier;
+	if (!mod)
+		return;
+
 	weston_compositor_add_key_binding(ec, KEY_PAGEUP, mod,
 					  zoom_key_binding, NULL);
 	weston_compositor_add_key_binding(ec, KEY_PAGEDOWN, mod,
@@ -6480,12 +6490,8 @@ shell_add_bindings(struct weston_compositor *ec, struct desktop_shell *shell)
 					  shell);
 	weston_compositor_add_key_binding(ec, KEY_F9, mod, backlight_binding,
 					  ec);
-	weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSDOWN, 0,
-				          backlight_binding, ec);
 	weston_compositor_add_key_binding(ec, KEY_F10, mod, backlight_binding,
 					  ec);
-	weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSUP, 0,
-				          backlight_binding, ec);
 	weston_compositor_add_key_binding(ec, KEY_K, mod,
 				          force_kill_binding, shell);
 	weston_compositor_add_key_binding(ec, KEY_UP, mod,
@@ -6499,10 +6505,6 @@ shell_add_bindings(struct weston_compositor *ec, struct desktop_shell *shell)
 					  workspace_move_surface_down_binding,
 					  shell);
 
-	if (shell->exposay_modifier)
-		weston_compositor_add_modifier_binding(ec, shell->exposay_modifier,
-						       exposay_binding, shell);
-
 	/* Add bindings for mod+F[1-6] for workspace 1 to 6. */
 	if (shell->workspaces.num > 1) {
 		num_workspace_bindings = shell->workspaces.num;
diff --git a/man/weston.ini.man b/man/weston.ini.man
index 6ebe68a3..6e92066e 100644
--- a/man/weston.ini.man
+++ b/man/weston.ini.man
@@ -266,7 +266,7 @@ pressed
 sets the modifier key used for common bindings (string), such as moving
 surfaces, resizing, rotating, switching, closing and setting the transparency
 for windows, controlling the backlight and zooming the desktop. Possible values:
-ctrl, alt, super (default)
+none, ctrl, alt, super (default)
 .TP 7
 .BI "num-workspaces=" 6
 defines the number of workspaces (unsigned integer). The user can switch