diff --git a/lv_core/lv_obj.h b/lv_core/lv_obj.h
index 64c2e2b86..3497806bd 100644
--- a/lv_core/lv_obj.h
+++ b/lv_core/lv_obj.h
@@ -429,7 +429,7 @@ void lv_obj_set_design_func(lv_obj_t * obj, lv_design_func_t fp);
  * Allocate a new ext. data for an object
  * @param obj pointer to an object
  * @param ext_size the size of the new ext. data
- * @return Normal pointer to the allocated ext
+ * @return pointer to the allocated ext
  */
 void * lv_obj_allocate_ext_attr(lv_obj_t * obj, uint16_t ext_size);
 
diff --git a/lv_objx/lv_img.h b/lv_objx/lv_img.h
index 5f1154160..aa7f553a1 100644
--- a/lv_objx/lv_img.h
+++ b/lv_objx/lv_img.h
@@ -36,8 +36,8 @@ typedef struct
     /*New data for this type */
     const void * src;             /*Image source: Pointer to an array or a file or a symbol*/
 
-    lv_coord_t w;               /*Width of the image (doubled when upscaled) (Handled by the library)*/
-    lv_coord_t h;               /*Height of the image (doubled when upscaled) (Handled by the library)*/
+    lv_coord_t w;               /*Width of the image (Handled by the library)*/
+    lv_coord_t h;               /*Height of the image (Handled by the library)*/
     uint8_t src_type  :2;       /*See: lv_img_src_t*/
     uint8_t auto_size :1;       /*1: automatically set the object size to the image size*/
     uint8_t chroma_keyed :1;    /*1: Chroma keyed image, LV_COLOR_TRANSP (lv_conf.h) pixels will be transparent (Handled by the library)*/
@@ -70,8 +70,8 @@ void lv_img_set_src(lv_obj_t * img, const void * src_img);
 /**
  * Obsolete since v5.1. Just for compatibility with v5.0. Will be removed in v6.0.
  * Use 'lv_img_set_src()' instead.
- * @param img
- * @param fn
+ * @param img -
+ * @param fn -
  */
 static inline void lv_img_set_file(lv_obj_t * img, const char * fn)
 {
@@ -98,8 +98,8 @@ static inline void lv_img_set_style(lv_obj_t *img, lv_style_t *style)
 
 /**
  * Obsolete since v5.1. Just for compatibility with v5.0. Will be removed in v6.0
- * @param img
- * @param upscale
+ * @param img -
+ * @param upscale -
  */
 static inline void lv_img_set_upscale(lv_obj_t * img, bool upcale)
 {
@@ -147,7 +147,7 @@ static inline lv_style_t* lv_img_get_style(lv_obj_t *img)
 
 /**
  * Obsolete since v5.1. Just for compatibility with v5.0. Will be removed in v6.0
- * @param img
+ * @param img -
  * @return false
  */
 static inline bool lv_img_get_upscale(lv_obj_t * img)
diff --git a/lv_objx/lv_line.h b/lv_objx/lv_line.h
index 2fb5b2ddc..252bd5065 100644
--- a/lv_objx/lv_line.h
+++ b/lv_objx/lv_line.h
@@ -90,8 +90,8 @@ static inline void lv_line_set_style(lv_obj_t *line, lv_style_t *style)
 
 /**
  * Obsolete since v5.1. Just for compatibility with v5.0. Will be removed in v6.0
- * @param line
- * @param upscale
+ * @param line -
+ * @param upscale -
  */
 static inline void lv_line_set_upscale(lv_obj_t * line, bool upcale)
 {
@@ -127,7 +127,7 @@ static inline lv_style_t* lv_line_get_style(lv_obj_t *line)
 
 /**
  * Obsolete since v5.1. Just for compatibility with v5.0. Will be removed in v6.0
- * @param line
+ * @param line -
  * @return false
  */
 static inline bool lv_line_get_upscale(lv_obj_t * line)
diff --git a/lv_objx/lv_lmeter.h b/lv_objx/lv_lmeter.h
index 65d9899d8..aa8cac3fc 100644
--- a/lv_objx/lv_lmeter.h
+++ b/lv_objx/lv_lmeter.h
@@ -80,7 +80,7 @@ void lv_lmeter_set_scale(lv_obj_t * lmeter, uint16_t angle, uint8_t line_cnt);
  * Set the styles of a line meter
  * @param lmeter pointer to a line meter object
  * @param bg set the style of the line meter
- *  */
+ */
 static inline void lv_lmeter_set_style(lv_obj_t *lmeter, lv_style_t *bg)
 {
     lv_obj_set_style(lmeter, bg);
diff --git a/lv_objx/lv_page.h b/lv_objx/lv_page.h
index dea8cabe2..2027d8a82 100644
--- a/lv_objx/lv_page.h
+++ b/lv_objx/lv_page.h
@@ -160,7 +160,7 @@ static inline void lv_page_set_scrl_layout(lv_obj_t * page, lv_layout_t layout)
  * @param page pointer to a page object
  * @param type which style should be set
  * @param style pointer to a style
- *  */
+ */
 void lv_page_set_style(lv_obj_t *page, lv_page_style_t type, lv_style_t *style);
 
 /*=====================
@@ -229,7 +229,7 @@ static inline bool lv_page_get_scrl_fit_ver(lv_obj_t * page)
  * @param page pointer to page object
  * @param type which style should be get
  * @return style pointer to a style
- *  */
+ */
 lv_style_t * lv_page_get_style(lv_obj_t *page, lv_page_style_t type);
 
 /*=====================