diff --git a/scripts/mbedtls_framework/config_common.py b/scripts/mbedtls_framework/config_common.py
index 123785d4b..58908ceea 100644
--- a/scripts/mbedtls_framework/config_common.py
+++ b/scripts/mbedtls_framework/config_common.py
@@ -416,7 +416,7 @@ def _common_parser_options(self, default_file_path):
         self.parser.add_argument(
             '--file', '-f',
             help="""File to read (and modify if requested). Default: {}.
-                 """.format(default_file_path))
+                 """.format(str(default_file_path).replace('%', '%%')))
         self.parser.add_argument(
             '--force', '-o',
             action='store_true',