diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3cb96e313e..1d473e0edc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,26 +15,6 @@ if(ESP_PLATFORM)
 
     target_compile_definitions(${COMPONENT_LIB} PUBLIC "-DLV_CONF_INCLUDE_SIMPLE")
 
-    if (CONFIG_LV_MEM_CUSTOM)
-        if (CONFIG_LV_MEM_CUSTOM_ALLOC)
-            target_compile_definitions(${COMPONENT_LIB} PUBLIC "-DLV_MEM_CUSTOM_ALLOC=${CONFIG_LV_MEM_CUSTOM_ALLOC}")
-        endif()
-
-        if (CONFIG_LV_MEM_CUSTOM_FREE)
-            target_compile_definitions(${COMPONENT_LIB} PUBLIC "-DLV_MEM_CUSTOM_FREE=${CONFIG_LV_MEM_CUSTOM_FREE}")
-        endif()
-    endif()
-
-    if (CONFIG_LV_TICK_CUSTOM)
-        if (CONFIG_LV_TICK_CUSTOM_SYS_TIME_EXPR)
-            target_compile_definitions(${COMPONENT_LIB} PUBLIC "-DLV_TICK_CUSTOM_SYS_TIME_EXPR=${CONFIG_LV_TICK_CUSTOM_SYS_TIME_EXPR}")
-        endif()
-    endif()
-
-    if (CONFIG_LV_USER_DATA_FREE)
-        target_compile_definitions(${COMPONENT_LIB} PUBLIC "-DLV_USER_DATA_FREE=${CONFIG_LV_USER_DATA_FREE}")
-    endif()
-
     if (CONFIG_LV_ATTRIBUTE_FAST_MEM_USE_IRAM)
         target_compile_definitions(${COMPONENT_LIB} PUBLIC "-DLV_ATTRIBUTE_FAST_MEM=IRAM_ATTR")
     endif()
@@ -49,16 +29,6 @@ elseif(ZEPHYR_BASE)
 
         zephyr_compile_definitions(LV_CONF_KCONFIG_EXTERNAL_INCLUDE=<autoconf.h>)
 
-        zephyr_compile_definitions_ifdef(CONFIG_LV_MEM_CUSTOM
-            LV_MEM_CUSTOM_ALLOC=${CONFIG_LV_MEM_CUSTOM_ALLOC}
-            )
-        zephyr_compile_definitions_ifdef(CONFIG_LV_MEM_CUSTOM
-            LV_MEM_CUSTOM_FREE=${CONFIG_LV_MEM_CUSTOM_FREE}
-            )
-        zephyr_compile_definitions_ifdef(CONFIG_LV_TICK_CUSTOM
-            LV_TICK_CUSTOM_SYS_TIME_EXPR=${CONFIG_LV_TICK_CUSTOM_SYS_TIME_EXPR}
-            )
-
         zephyr_library()
 
         file(GLOB_RECURSE SOURCES src/*.c)
diff --git a/Kconfig b/Kconfig
index 5bf5ec86d7..4ce45815ca 100644
--- a/Kconfig
+++ b/Kconfig
@@ -322,24 +322,6 @@ menu "LVGL configuration"
             config LV_USE_LARGE_COORD
                 bool "Extend the default -32k..32k coordinate range to -4M..4M by using int32_t for coordinates instead of int16_t"
         endmenu
-
-        config LV_USE_USER_DATA_FREE
-            bool "Free the user data field upon object deletion"
-            depends on LV_USE_USER_DATA
-        config LV_USER_DATA_FREE_INCLUDE
-            string "Header for user data free function"
-            default "something.h"
-            depends on LV_USE_USER_DATA_FREE
-        config LV_USER_DATA_FREE
-            string "Invoking for user data free function. It has the lv_obj_t pointer as single parameter."
-            default "(user_data_free)"
-            depends on LV_USE_USER_DATA_FREE
-        config LV_USE_API_EXTENSION_V6
-            bool "Use the functions and types from the older (v6) API if possible."
-            default y if !LV_CONF_MINIMAL
-        config LV_USE_API_EXTENSION_V7
-            bool "Use the functions and types from the older (v7) API if possible."
-            default y if !LV_CONF_MINIMAL
     endmenu
 
     menu "Font usage"
diff --git a/src/core/lv_obj_tree.c b/src/core/lv_obj_tree.c
index efe5395b4d..ee494a8c69 100644
--- a/src/core/lv_obj_tree.c
+++ b/src/core/lv_obj_tree.c
@@ -19,10 +19,6 @@
  *********************/
 #define MY_CLASS &lv_obj_class
 
-#if defined(LV_USER_DATA_FREE_INCLUDE)
-    #include LV_USER_DATA_FREE_INCLUDE
-#endif /*LV_USE_USER_DATA_FREE*/
-
 /**********************
  *      TYPEDEFS
  **********************/