diff --git a/frontend/apps/filemanager/filemanagermenu.lua b/frontend/apps/filemanager/filemanagermenu.lua
index 3e6ad26eb..eec77bd26 100644
--- a/frontend/apps/filemanager/filemanagermenu.lua
+++ b/frontend/apps/filemanager/filemanagermenu.lua
@@ -40,7 +40,7 @@ function FileManagerMenu:init()
                     UIManager:show(ConfirmBox:new{
                         text = _("You have unsaved default settings. Save them now?"),
                         ok_callback = function()
-                            SetDefaults:SaveSettings()
+                            SetDefaults:saveSettings()
                         end,
                     })
                 else
diff --git a/frontend/apps/filemanager/filemanagersetdefaults.lua b/frontend/apps/filemanager/filemanagersetdefaults.lua
index e6e98aac2..fbd686f22 100644
--- a/frontend/apps/filemanager/filemanagersetdefaults.lua
+++ b/frontend/apps/filemanager/filemanagersetdefaults.lua
@@ -64,9 +64,9 @@ function SetDefaults:init()
         dimen = Screen:getSize(),
     }
     -- FIXME:
-    -- in this use case (an input dialog is closed and the menu container is opened
-    -- immediately) we need to set the full screen dirty because otherwise only
-    -- the input dialog part of the screen is refreshed.
+    -- in this use case (an input dialog is closed and the menu container is
+    -- opened immediately) we need to set the full screen dirty because
+    -- otherwise only the input dialog part of the screen is refreshed.
     menu_container.onShow = function()
         UIManager:setDirty(nil, "partial")
     end
@@ -256,7 +256,7 @@ function SetDefaults:ConfirmSave()
     UIManager:show(ConfirmBox:new{
         text = _('Are you sure you want to save the settings to "defaults.persistent.lua"?'),
         ok_callback = function()
-            self:SaveSettings()
+            self:saveSettings()
         end,
     })
 end
@@ -275,7 +275,7 @@ function SetDefaults:build_setting(j)
     end
 end
 
-function SetDefaults:SaveSettings()
+function SetDefaults:saveSettings()
     self.results = {}
     local persisted_defaults = {}
     local file = io.open(persistent_filename, "r")
diff --git a/spec/unit/defaults_spec.lua b/spec/unit/defaults_spec.lua
index eb650b073..1d3f0b3dc 100644
--- a/spec/unit/defaults_spec.lua
+++ b/spec/unit/defaults_spec.lua
@@ -22,7 +22,7 @@ describe("defaults module", function()
         Defaults.changed[28] = true
         Defaults.changed[63] = true
         Defaults.changed[77] = true
-        Defaults:SaveSettings()
+        Defaults:saveSettings()
         assert.is_same(#Defaults.defaults_name, 77)
         assert.is_same(Defaults.defaults_name[28], 'DHINTCOUNT')
         assert.is_same(Defaults.defaults_name[77], 'SEARCH_TITLE')
@@ -63,7 +63,7 @@ DTAP_ZONE_MENU = {
             h = 20.25,
             w = 20.75
         }
-        Defaults:SaveSettings()
+        Defaults:saveSettings()
         fd = io.open(persistent_filename)
         assert.Equals(
 [[-- For configuration changes that persists between updates
@@ -109,7 +109,7 @@ DHINTCOUNT = 2
         Defaults:init()
         Defaults.changed[28] = true
         Defaults.defaults_value[28] = 1
-        Defaults:SaveSettings()
+        Defaults:saveSettings()
         fd = io.open(persistent_filename)
         assert.Equals(
 [[-- For configuration changes that persists between updates