diff --git a/src/lechaptcalmon.ts b/src/lechaptcalmon.ts
index 49393e7610d1f58034fe504ca55c18ba4848341c..c130e59ae4a6d89fc8ea9b130947d920c92a784f 100644
--- a/src/lechaptcalmon.ts
+++ b/src/lechaptcalmon.ts
@@ -82,6 +82,9 @@ export class LechaptCalmon extends Nub {
         this.prms.D.calculability = ParamCalculability.EQUATION;
         this.prms.J.calculability = ParamCalculability.EQUATION;
         this.prms.Lg.calculability = ParamCalculability.EQUATION;
+        this.prms.L.calculability = ParamCalculability.FREE;
+        this.prms.M.calculability = ParamCalculability.FREE;
+        this.prms.N.calculability = ParamCalculability.FREE;
     }
 
     /**