diff --git a/config/expcore/roles.lua b/config/expcore/roles.lua
index 8200287d..95b797bd 100644
--- a/config/expcore/roles.lua
+++ b/config/expcore/roles.lua
@@ -20,7 +20,7 @@ end)
 
 --- Admin Roles
 Roles.new_role('System','SYS')
-:set_permission_group('Admin')
+:set_permission_group('Default', true)
 :set_flag('is_admin')
 :set_flag('is_spectator')
 :set_flag('report-immune')
diff --git a/expcore/permission_groups.lua b/expcore/permission_groups.lua
index 30ac6039..0eca5f75 100644
--- a/expcore/permission_groups.lua
+++ b/expcore/permission_groups.lua
@@ -142,15 +142,15 @@ end
 @tparam boolean state the state that you want to set it to, true = allow, false = disallow
 @treturn Permissions_Groups._prototype returns self so function can be chained
 
-@usage-- Set an action to be disalowed
+@usage-- Set an action to be disallowed
 group:set_action('toggle_map_editor', false)
 
 ]]
 function Permissions_Groups._prototype:set_action(action, state)
-    if type(action) == 'string' then
-        action = defines.input_action[action]
-    end
-    self.actions[action] = state
+    local input_action = defines.input_action[action]
+    if input_action == nil then input_action = action end
+    assert(type(input_action) == 'number', tostring(action)..' is not a valid input action')
+    self.actions[input_action] = state
     return self
 end