diff --git a/src/libs/freetype/lv_freetype.c b/src/libs/freetype/lv_freetype.c
index aca6a1301..17ce03830 100755
--- a/src/libs/freetype/lv_freetype.c
+++ b/src/libs/freetype/lv_freetype.c
@@ -181,7 +181,6 @@ void lv_freetype_font_delete(lv_font_t * font)
     LV_ASSERT_NULL(font);
     lv_freetype_context_t * ctx = lv_freetype_get_context();
     lv_freetype_font_dsc_t * dsc = (lv_freetype_font_dsc_t *)(font->dsc);
-    LV_ASSERT_NULL(dsc);
     LV_ASSERT_FREETYPE_FONT_DSC(dsc);
 
     lv_cache_release(ctx->cache_node_cache, dsc->cache_node_entry, NULL);
diff --git a/src/libs/freetype/lv_freetype_private.h b/src/libs/freetype/lv_freetype_private.h
index 976e54fea..be652be69 100755
--- a/src/libs/freetype/lv_freetype_private.h
+++ b/src/libs/freetype/lv_freetype_private.h
@@ -43,7 +43,8 @@ extern "C" {
 #define LV_ASSERT_FREETYPE_FONT_DSC(dsc)                                                   \
     do {                                                                                   \
         LV_ASSERT_NULL(dsc);                                                               \
-        LV_ASSERT_MSG(LV_FREETYPE_FONT_DSC_HAS_MAGIC_NUM(dsc), "Invalid font descriptor"); \
+        LV_ASSERT_FORMAT_MSG(LV_FREETYPE_FONT_DSC_HAS_MAGIC_NUM(dsc),                      \
+                             "Invalid font descriptor: 0x%" LV_PRIx32, (dsc)->magic_num);  \
     } while (0)
 
 #define FT_INT_TO_F26DOT6(x) ((x) << 6)