diff --git a/.luacheckrc b/.luacheckrc
index 657852f2c..ea91633c9 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -12,7 +12,6 @@ read_globals = {
     "ANDROID_FONT_DIR",
     "KOBO_TOUCH_MIRRORED",
     "KOBO_SYNC_BRIGHTNESS_WITH_NICKEL",
-    "DRCOUNTMAX",
     "DHINTCOUNT",
     "DFULL_SCREEN",
     "DSCROLL_MODE",
diff --git a/defaults.lua b/defaults.lua
index c754d9045..07de327f6 100644
--- a/defaults.lua
+++ b/defaults.lua
@@ -3,7 +3,8 @@
 
 -- number of page turns between full screen refresh
 -- default to do a full refresh on every 6 page turns
-DRCOUNTMAX = 6
+-- no longer needed
+--DRCOUNTMAX = 6
 
 -- number of pages for hinting
 -- default to pre-rendering 1 page
diff --git a/frontend/ui/uimanager.lua b/frontend/ui/uimanager.lua
index 26ff2a770..af9cd7ec6 100644
--- a/frontend/ui/uimanager.lua
+++ b/frontend/ui/uimanager.lua
@@ -13,12 +13,13 @@ local Input = Device.input
 local Screen = Device.screen
 
 local MILLION = 1000000
+local DEFAULT_FULL_REFRESH_COUNT = 6
 
 -- there is only one instance of this
 local UIManager = {
     -- trigger a full refresh when counter reaches FULL_REFRESH_COUNT
     FULL_REFRESH_COUNT =
-        G_reader_settings:readSetting("full_refresh_count") or DRCOUNTMAX,
+        G_reader_settings:readSetting("full_refresh_count") or DEFAULT_FULL_REFRESH_COUNT,
     refresh_count = 0,
 
     -- How long to wait between ZMQ wakeups: 50ms.
diff --git a/spec/unit/defaults_spec.lua b/spec/unit/defaults_spec.lua
index 7a392a28d..4e8be8b0a 100644
--- a/spec/unit/defaults_spec.lua
+++ b/spec/unit/defaults_spec.lua
@@ -8,7 +8,7 @@ describe("defaults module", function()
 
     it("should load all defaults from defaults.lua", function()
         Defaults:init()
-        assert.is_same(110, #Defaults.defaults_name)
+        assert.is_same(109, #Defaults.defaults_name)
         assert.is_same("DFULL_SCREEN", Defaults.defaults_name[55])
     end)
 
@@ -20,13 +20,13 @@ describe("defaults module", function()
         Defaults.changed[20] = true
         Defaults.changed[47] = true
         Defaults.changed[55] = true
-        Defaults.changed[89] = true
-        Defaults.changed[105] = true
+        Defaults.changed[88] = true
+        Defaults.changed[104] = true
         Defaults:saveSettings()
-        assert.is_same(110, #Defaults.defaults_name)
+        assert.is_same(109, #Defaults.defaults_name)
         assert.is_same("DFULL_SCREEN", Defaults.defaults_name[55])
-        assert.is_same("SEARCH_LIBRARY_PATH", Defaults.defaults_name[105])
-        assert.is_same("DTAP_ZONE_BACKWARD", Defaults.defaults_name[89])
+        assert.is_same("SEARCH_LIBRARY_PATH", Defaults.defaults_name[104])
+        assert.is_same("DTAP_ZONE_BACKWARD", Defaults.defaults_name[88])
         assert.is_same("DCREREADER_CONFIG_WORD_GAP_LARGE", Defaults.defaults_name[47])
         assert.is_same("DCREREADER_CONFIG_H_MARGIN_SIZES_XXX_LARGE", Defaults.defaults_name[20])
         local fd = io.open(persistent_filename, "r")
@@ -53,8 +53,8 @@ DFULL_SCREEN = 1
         Defaults:init()
         Defaults.changed[55] = true
         Defaults.defaults_value[55] = 2
-        Defaults.changed[89] = true
-        Defaults.defaults_value[89] = {
+        Defaults.changed[88] = true
+        Defaults.defaults_value[88] = {
             y = 10,
             x = 10.125,
             h = 20.25,