diff --git a/tools/ci_build/build.py b/tools/ci_build/build.py
index 7d098d046fcd4..7914cb42288d6 100644
--- a/tools/ci_build/build.py
+++ b/tools/ci_build/build.py
@@ -405,7 +405,7 @@ def convert_arg_line_to_args(self, arg_line):
     parser.add_argument(
         "--macos",
         choices=["MacOSX", "Catalyst"],
-        help="Specify the target platform for macOS build. Default is MacOSX. Only specify when --build_apple_framework is present.",
+        help="Specify the target platform for macOS build. Only specify this argument when --build_apple_framework is present.",
     )
 
     parser.add_argument(