diff --git a/R/spf.r b/R/spf.r
index 9da0952..a7f1114 100644
--- a/R/spf.r
+++ b/R/spf.r
@@ -68,6 +68,8 @@ passes_all <- function(spf_rec) {
 
 #' SPF field extraction functions
 #'
+#' Various helper functions to extract SPF record components.
+#'
 #' @param spf_rec a character vector of DNS TXT records
 #' @export
 spf_ipv4s <- function(spf_rec) {
diff --git a/man/spf_ipv4s.Rd b/man/spf_ipv4s.Rd
index e056411..e35714f 100644
--- a/man/spf_ipv4s.Rd
+++ b/man/spf_ipv4s.Rd
@@ -18,7 +18,10 @@ spf_ptrs(spf_rec)
 
 spf_exists(spf_rec)
 }
+\arguments{
+\item{spf_rec}{a character vector of DNS TXT records}
+}
 \description{
-SPF field extraction functions
+Various helper functions to extract SPF record components.
 }