diff --git a/src/lv_font/lv_font_fmt_txt.h b/src/lv_font/lv_font_fmt_txt.h
index 8e19f4b2ed..cd9257d7da 100644
--- a/src/lv_font/lv_font_fmt_txt.h
+++ b/src/lv_font/lv_font_fmt_txt.h
@@ -50,12 +50,14 @@ typedef struct
 
 
 /** Format of font character map. */
-typedef enum {
+enum {
     LV_FONT_FMT_TXT_CMAP_FORMAT0_TINY,
     LV_FONT_FMT_TXT_CMAP_FORMAT0_FULL,
     LV_FONT_FMT_TXT_CMAP_SPARSE_TINY,
     LV_FONT_FMT_TXT_CMAP_SPARSE_FULL,
-}lv_font_fmt_txt_cmap_type_t;
+};
+
+typedef uint8_t lv_font_fmt_txt_cmap_type_t;
 
 
 /* Map codepoints to a `glyph_dsc`s