diff --git a/Tools/autotest/sim_vehicle.py b/Tools/autotest/sim_vehicle.py
index fa5692f2ef4..d236f64f8a0 100755
--- a/Tools/autotest/sim_vehicle.py
+++ b/Tools/autotest/sim_vehicle.py
@@ -407,7 +407,7 @@ def do_build(opts, frame_options):
     for nv in opts.define:
         cmd_configure.append("--define=%s" % nv)
 
-    if opts.enable_dds:
+    if opts.enable_DDS:
         cmd_configure.append("--enable-DDS")
 
     if opts.disable_networking:
@@ -1353,7 +1353,7 @@ group_sim.add_option("", "--sim-address",
                      type=str,
                      default="127.0.0.1",
                      help="IP address of the simulator. Defaults to localhost")
-group_sim.add_option("--enable-dds", action='store_true',
+group_sim.add_option("--enable-DDS", action='store_true',
                      help="Enable the dds client to connect with ROS2/DDS")
 group_sim.add_option("--disable-networking", action='store_true',
                      help="Disable networking APIs")