diff --git a/polymani.pl b/polymani.pl
index 052ad62..220b6a0 100644
--- a/polymani.pl
+++ b/polymani.pl
@@ -583,7 +583,7 @@ simplify_polynomial_as_list(L, L13) :-
 %% ?- simplify_polynomial_as_list([0*x, 0], L).
 %@ L = [0] .
 
-%% join_similar_terms(+P:ListList, -P2:ListList) is det
+%% join_similar_terms(+P:List, -P2:List) is det
 %
 %  Joins similar sublists representing terms by using
 %  `add_terms` to check if they can be merged and perform