diff --git a/polymani.pl b/polymani.pl
index 4a7fec7..cbaf1c2 100644
--- a/polymani.pl
+++ b/polymani.pl
@@ -70,6 +70,8 @@ polyplay :-
 %% Tests:
 %% ?- polyplay.
 
+process_input(_).
+
 %% nlp_number(?W:Atom, ?D:Int) is det
 %
 %  Definition of a Alphabetical and Numerical relation
@@ -303,8 +305,7 @@ parse_command(op(*, TN, TP)) -->
     [multiply],
     parse_number(TN),
     [by],
-    parse_polynomial(_-_, TP).
-
+    parse_polynomial(TP).
 parse_input(command(TCL, TCR)) -->
     parse_command(TCL),
     [and],