diff --git a/doc/internals/filters.txt b/doc/internals/filters.txt
index 7101343..d05cff6 100644
--- a/doc/internals/filters.txt
+++ b/doc/internals/filters.txt
@@ -1,5 +1,5 @@
                    -----------------------------------------
-                          Filters Guide - version 0.1
+                          Filters Guide - version 1.7
                           ( Last update: 2016-04-18 )
                    ------------------------------------------
                           Author : Christopher Faulet