diff --git a/doc/arm/general.rst b/doc/arm/general.rst
index a6402a0b82..16bdde269a 100644
--- a/doc/arm/general.rst
+++ b/doc/arm/general.rst
@@ -170,7 +170,7 @@ DNS (GSS-TSIG).* October 2003.
 DNS.* March 2005.
 
 :rfc:`4033` - R. Arends, R. Austein, M. Larson, D. Massey, and S. Rose. *DNS Security
-Introduction and Requirements.* March 2005. [4]
+Introduction and Requirements.* March 2005.
 
 :rfc:`4034` - R. Arends, R. Austein, M. Larson, D. Massey, and S. Rose. *Resource Records for
 the DNS Security Extensions.* March 2005.
diff --git a/doc/misc/rfc-compliance b/doc/misc/rfc-compliance
index 4f9bf24832..9e40d30ad4 100644
--- a/doc/misc/rfc-compliance
+++ b/doc/misc/rfc-compliance
@@ -57,7 +57,7 @@ or Best Current Practice (BCP) documents.  The list is non exhaustive.
   RFC3597
   RFC3645
   RFC4025
-  RFC4033 [18]
+  RFC4033
   RFC4034
   RFC4035
   RFC4074