diff --git a/hmp-commands.hx b/hmp-commands.hx
index 0d780e6da3..7ae2468a3d 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -752,13 +752,13 @@ ERST
         .name       = "mouse_button",
         .args_type  = "button_state:i",
         .params     = "state",
-        .help       = "change mouse button state (1=L, 2=M, 4=R)",
+        .help       = "change mouse button state (1=L, 2=R, 4=M)",
         .cmd        = hmp_mouse_button,
     },
 
 SRST
 ``mouse_button`` *val*
-  Change the active mouse button state *val* (1=L, 2=M, 4=R).
+  Change the active mouse button state *val* (1=L, 2=R, 4=M).
 ERST
 
     {