diff --git a/tools/mo/openvino/tools/mo/utils/cli_parser.py b/tools/mo/openvino/tools/mo/utils/cli_parser.py
index a363e1298f3..df41ef4f3a9 100644
--- a/tools/mo/openvino/tools/mo/utils/cli_parser.py
+++ b/tools/mo/openvino/tools/mo/utils/cli_parser.py
@@ -402,9 +402,11 @@ def get_common_cli_parser(parser: argparse.ArgumentParser = None):
                               action=DeprecatedStoreTrue, default=False)
     # we use CanonicalizeDirCheckExistenceAction instead of readable_dirs to handle empty strings
     common_group.add_argument("--extensions",
-                              help="Directory or a comma separated list of directories with extensions. To disable all "
-                                   "extensions including those that are placed at the default location, pass an empty "
-                                   "string.",
+                              help="Paths or a comma-separated list of paths to libraries (.so or .dll) "
+                                   "with extensions. For the legacy MO path (if `--use_legacy_frontend` is used), "
+                                   "a directory or a comma-separated list of directories with extensions are supported. "
+                                   "To disable all extensions including those that are placed at the default location, "
+                                   "pass an empty string.",
                               default=import_extensions.default_path(),
                               action=CanonicalizePathCheckExistenceAction,
                               type=readable_dirs_or_files_or_empty)