1 files changed, 1 insertions, 0 deletions
diff --git a/js/Linear/TCLSS.js b/js/Linear/TCLSS.js
index fddee335..391f5387 100644
--- a/js/Linear/TCLSS.js
+++ b/js/Linear/TCLSS.js
@@ -64,6 +64,7 @@ function TCLSS() {
             var ns = tmpvar0[1];
             if (ms!=ns) {
                 message("A matrix must be square");
+                throw "user error";
             } else {
                 var tmpvar1 = check_io(this.model,this.graphics,[[in1],[ms]],out,1,[]);
                 this.model = tmpvar1[0];