diff --git a/06_prolog/desc b/06_prolog/desc
index 115ca32..3648d30 100644
--- a/06_prolog/desc
+++ b/06_prolog/desc
@@ -1,5 +1,3 @@
-Knowledge base is in the file kb1.txt.
-
 1. Convert the file 'family-tree.txt' to Prolog Facts (format understandable for Prolog) in any language you like.
 
 The file has 4 columns: name, surname, pesel, parent's pesel