diff --git a/data/filter.txt b/data/filter.txt
index b3f5eb8db..3d6c49fcc 100644
--- a/data/filter.txt
+++ b/data/filter.txt
@@ -11,7 +11,7 @@
 #       sed "$ s/,$/\n  ];\n}/"
 
 # The rules MUST be sorted by the number column first and then the first matching rule MUST be used.
-# ROAs MUST be checked against these rules and max-length of the ROA NUST NOT be longer than allowed by the matching rule.
+# ROAs MUST be checked against these rules and max-length of the ROA MUST NOT be longer than allowed by the matching rule.
 
 #Nr   Action  Prefix           MinLen  MaxLen  # Comment
 
diff --git a/data/filter6.txt b/data/filter6.txt
index 989244f28..270ed12f2 100644
--- a/data/filter6.txt
+++ b/data/filter6.txt
@@ -1,17 +1,17 @@
-# To FRR Rules:
+# For FRR Rules:
 #   cat filter6.txt | \
 #       grep -e  ^[0-9] | \
-#       awk '{ print "ipv prefix-list dn42v6-in seq " $1 " " $2 " " $3 " ge " $4 " le " $5}' | \
+#       awk '{ print "ipv6 prefix-list dn42v6-in seq " $1 " " $2 " " $3 " ge " $4 " le " $5}' | \
 #       sed "s_/\([0-9]\+\) ge \1_/\1_g;s_/\([0-9]\+\) le \1_/\1_g"
 #
 # For BIRD Rules:
 #   cat filter6.txt | \
-#       awk 'BEGIN {printf "function is_valid_network() {\n return net ~ [\n" } \
+#       awk 'BEGIN {printf "function is_valid_network_v6() {\n return net ~ [\n" } \
 #            /^[0-9]/ && $2 ~ /permit/ {printf "     %s{%s,%s},\n", $3, $4, $5};' | \
 #       sed "$ s/,$/\n  ];\n}/"
 
 # The rules MUST be sorted by the number column first and then the first matching rule MUST be used.
-# ROAs MUST be checked against these rules and max-length of the ROA NUST NOT be longer than allowed by the matching rule.
+# ROAs MUST be checked against these rules and max-length of the ROA MUST NOT be longer than allowed by the matching rule.
 
 # Nr    Action    Prefix                      MinLen  MaxLen    # Comment