diff --git a/tools/images_packer/README.md b/tools/images_packer/README.md
index e0be9e8db..a308c977b 100644
--- a/tools/images_packer/README.md
+++ b/tools/images_packer/README.md
@@ -191,7 +191,7 @@ optional arguments:
   -h, --help            show this help message and exit
   --image <ECU_NAME>:<IMAGE_PATH>[:<IMAGE_VERSION>]
                         OTA image for <ECU_ID> as tar archive(compressed or uncompressed), this option can be used multiple times to include multiple images.
-                        NOTE: if multiple OTA target image is specified for the same ECU, the later one will override the previous set one.
+                        NOTE: multiple OTA target image specified for the same ECU is unexpected behavior.
   -o <OUTPUT_FILE_PATH>, --output <OUTPUT_FILE_PATH>
                         save the generated image bundle tar archive to <OUTPUT_FILE_PATH>.
 ```
diff --git a/tools/images_packer/__main__.py b/tools/images_packer/__main__.py
index b03a3e34e..bd3f3f5ab 100644
--- a/tools/images_packer/__main__.py
+++ b/tools/images_packer/__main__.py
@@ -73,7 +73,7 @@ def main_build_offline_ota_image_bundle(args: argparse.Namespace):
                 logger.error(
                     (
                         f"ERR: OTA target image for ECU@{_ecu_id} is already set to"
-                        f"from {image_files[_ecu_id]}, please check the params"
+                        f"{image_files[_ecu_id]}, please check the --image params"
                     )
                 )
                 sys.exit(errno.EINVAL)
@@ -243,8 +243,7 @@ def command_build_offline_ota_image_bundle(
         help=(
             "OTA image for <ECU_ID> as tar archive(compressed or uncompressed), "
             "this option can be used multiple times to include multiple images. \n"
-            "NOTE: if multiple OTA target image is specified for the same ECU, the later one "
-            "will override the previous set one."
+            "NOTE: multiple OTA target image specified for the same ECU is unexpected behavior"
         ),
         required=True,
         metavar="<ECU_NAME>:<IMAGE_PATH>[:<IMAGE_VERSION>]",