diff --git a/libraries/SITL/SITL.cpp b/libraries/SITL/SITL.cpp
index 421d0a99a102a6..8e58ef09a091f5 100644
--- a/libraries/SITL/SITL.cpp
+++ b/libraries/SITL/SITL.cpp
@@ -373,7 +373,7 @@ const AP_Param::GroupInfo SIM::var_info2[] = {
     // @Description: Rotational acceleration of twist x axis
     // @Units: rad/s/s
     AP_GROUPINFO("TWIST_X",     37, SIM,  twist.x, 0),
-    // @Param: TWIST_X
+    // @Param: TWIST_Y
     // @DisplayName: Twist y
     // @Description: Rotational acceleration of twist y axis
     // @Units: rad/s/s