diff --git a/env_support/cmake/custom.cmake b/env_support/cmake/custom.cmake
index 2fdc428fef..a9b79858dc 100644
--- a/env_support/cmake/custom.cmake
+++ b/env_support/cmake/custom.cmake
@@ -6,10 +6,11 @@ option(LV_LVGL_H_INCLUDE_SIMPLE
 option(LV_CONF_INCLUDE_SIMPLE
        "Use #include \"lv_conf.h\" instead of #include \"../../lv_conf.h\"" ON)
 
-# Option to set LV_CONF_PATH, if set parent path LV_CONF_DIR is added to
-# includes
-option(LV_CONF_PATH "Path defined for lv_conf.h")
-get_filename_component(LV_CONF_DIR ${LV_CONF_PATH} DIRECTORY)
+# Option LV_CONF_PATH, which should be the path for lv_conf.h
+# If set parent path LV_CONF_DIR is added to includes
+if( LV_CONF_PATH )
+    get_filename_component(LV_CONF_DIR ${LV_CONF_PATH} DIRECTORY)
+endif( LV_CONF_PATH )
 
 # Option to build shared libraries (as opposed to static), default: OFF
 option(BUILD_SHARED_LIBS "Build shared libraries" OFF)