diff --git a/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c b/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c
index a2bcacd33b..d2e902dc2e 100644
--- a/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c
+++ b/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c
@@ -447,7 +447,7 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_rgb565(lv_draw_sw_blend_ima
             break;
 #endif
         default:
-            LV_LOG_WARN("Not supported source color format");
+            LV_LOG_WARN("Not supported source color format 0x%02X", dsc->src_color_format);
             break;
     }
 }
diff --git a/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565_swapped.c b/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565_swapped.c
index 88845845c5..bad14ba91b 100644
--- a/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565_swapped.c
+++ b/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565_swapped.c
@@ -446,7 +446,7 @@ void LV_ATTRIBUTE_FAST_MEM lv_draw_sw_blend_image_to_rgb565_swapped(lv_draw_sw_b
             break;
 #endif
         default:
-            LV_LOG_WARN("Not supported source color format");
+            LV_LOG_WARN("Not supported source color format 0x%02X", dsc->src_color_format);
             break;
     }
 }