diff --git a/@SerialLink/SerialLink.m b/@SerialLink/SerialLink.m
index 3fb4227c..1d956c9f 100644
--- a/@SerialLink/SerialLink.m
+++ b/@SerialLink/SerialLink.m
@@ -535,7 +535,7 @@ function display(r)
 
         function set.tool(r, v)
             if isempty(v)
-                r.base = eye(4,4);
+                r.tool = eye(4,4);
             elseif ~ishomog(v)
                 error('tool must be a homogeneous transform');
             else