diff --git a/faq.md b/faq.md
index 14a59f60c..f79f953a3 100644
--- a/faq.md
+++ b/faq.md
@@ -640,7 +640,7 @@ itself.
 
 Do remember that if your submission requires different filenames, then you
 **MUST** make a **COPY** of them in your `Makefile`. See also
-[Rule 5 - Purity](next/rules.html#rule-5---purity).
+[Rule 5 - Integrity](next/rules.html#rule-5---integrity).
 
 
 Jump to: [top](#)
@@ -1098,7 +1098,7 @@ modes, it also verifies them after the fact and if they are not correct it is an
 If you do need different permissions, then see the
 FAQ on "[file permissions](#file_perms)". Also keep in mind
 [Rule 4 - Files](next/rules.html#rule-4---files),
-[Rule 5 - Purity](next/rules.html#rule-5---purity),
+[Rule 5 - Integrity](next/rules.html#rule-5---integrity),
 and
 [Rule 16 - Anonymous](next/rules.html#rule-16---anonymous).
 
diff --git a/next/rules.md b/next/rules.md
index c927e4ee3..d6427c99e 100644
--- a/next/rules.md
+++ b/next/rules.md
@@ -37,7 +37,7 @@ and remains unaltered.  All other uses **MUST** receive prior permission in
 writing by [contacting the judges](../contact.html).
 
 
-## Rules version
+## Rules Version
 
 These IOCCC Rules are version **29.05 2025-11-21**.
 
@@ -179,7 +179,7 @@ See [Rule 17 - Packaging](rules.html#rule-17---packaging).
 
 
 <div id="rule5">
-## Rule 5 - Purity
+## Rule 5 - Integrity
 </div>
 
 Your submission **MUST NOT** modify the filenames or content of any of
@@ -294,7 +294,7 @@ bits are **NOT** allowed in submissions and those bits will **NOT** be copied by
 
 See [Rule 4 - Files](rules.html#rule-4---files),
 and
-[Rule 5 - Purity](rules.html#rule-5---purity).
+[Rule 5 - Integrity](rules.html#rule-5---integrity).
 
 
 <div id="rule11">