diff --git a/src/lv_themes/lv_theme_material.c b/src/lv_themes/lv_theme_material.c
index fff832225..d783a3c32 100644
--- a/src/lv_themes/lv_theme_material.c
+++ b/src/lv_themes/lv_theme_material.c
@@ -654,7 +654,6 @@ lv_theme_t * lv_theme_material_init(lv_color_t color_primary, lv_color_t color_s
     spinner_init();
     chart_init();
     checkbox_init();
-    keyboard_init();
     textarea_init();
     ddlist_init();
     roller_init();
diff --git a/src/lv_widgets/lv_bar.c b/src/lv_widgets/lv_bar.c
index 81615b8bd..e2b01fb89 100644
--- a/src/lv_widgets/lv_bar.c
+++ b/src/lv_widgets/lv_bar.c
@@ -73,7 +73,7 @@ static lv_signal_cb_t ancestor_signal;
  *             Pointer to an other bar to copy.
  * @return pointer to the created bar
  */
-lv_obj_t * lv_bar_create(lv_obj_t * parent, lv_obj_t * copy)
+lv_obj_t * lv_bar_create(lv_obj_t * parent, const lv_obj_t * copy)
 {
     LV_LOG_TRACE("lv_bar create started");
 
diff --git a/src/lv_widgets/lv_bar.h b/src/lv_widgets/lv_bar.h
index 6a761921f..e23de2f03 100644
--- a/src/lv_widgets/lv_bar.h
+++ b/src/lv_widgets/lv_bar.h
@@ -96,7 +96,7 @@ typedef uint8_t lv_bar_part_t;
  *             Pointer to an other bar to copy.
  * @return pointer to the created bar
  */
-lv_obj_t * lv_bar_create(lv_obj_t * parent, lv_obj_t * copy);
+lv_obj_t * lv_bar_create(lv_obj_t * parent, const lv_obj_t * copy);
 
 /*=====================
  * Setter functions