diff --git a/patch_v2/reader_app/build_reader.sh b/patch_v2/reader_app/build_reader.sh
index 8a77613..748659a 100755
--- a/patch_v2/reader_app/build_reader.sh
+++ b/patch_v2/reader_app/build_reader.sh
@@ -82,7 +82,9 @@ build_mipsel_libs() {
   for f in vendor/libmobi/src/*.c; do b="$(basename "$f" .c)"; [ "$b" = "miniz" ] && continue
     [ -f "$OBJ/lm_$b.o" ] || $CC -Os -static -w -Ivendor/libmobi/src -Ivendor/zlib -c "$f" -o "$OBJ/lm_$b.o"
   done
-  [ -f "$OBJ/rdimg.o" ] || $CC -Os -static -Wall -Wextra -Ivendor/stb -DSTB_IMAGE_IMPLEMENTATION -c engine/rdimg.c -o "$OBJ/rdimg.o"
+  # stb_image 的实现由 meow_ui.a 提供（SDK 自 M6.45 收编 stb_image.c.o）；此处只编封装，
+  # 否则链接 meow_ui.a 时 stbi_* 会与归档内 stb_image.o 重复定义。
+  [ -f "$OBJ/rdimg.o" ] || $CC -Os -static -Wall -Wextra -Ivendor/stb -c engine/rdimg.c -o "$OBJ/rdimg.o"
 }
 build_mipsel_libs