diff --git a/cache.h b/cache.h
index 16a08aada2..4aa1bd079d 100644
--- a/cache.h
+++ b/cache.h
@@ -1689,10 +1689,10 @@ struct ident_split {
 int split_ident_line(struct ident_split *, const char *, int);
 
 /*
- * Given a commit object buffer and the commit headers, replaces the idents
- * in the headers with their canonical versions using the mailmap mechanism.
+ * Given a commit or tag object buffer and the commit or tag headers, replaces
+ * the idents in the headers with their canonical versions using the mailmap mechanism.
  */
-void commit_rewrite_person(struct strbuf *, const char **, struct string_list *);
+void apply_mailmap_to_header(struct strbuf *, const char **, struct string_list *);
 
 /*
  * Compare split idents for equality or strict ordering. Note that we
diff --git a/ident.c b/ident.c
index 1eee4fd0e3..7f66beda42 100644
--- a/ident.c
+++ b/ident.c
@@ -387,8 +387,8 @@ static ssize_t rewrite_ident_line(const char *person, size_t len,
 	return 0;
 }
 
-void commit_rewrite_person(struct strbuf *buf, const char **header,
-			    struct string_list *mailmap)
+void apply_mailmap_to_header(struct strbuf *buf, const char **header,
+			       struct string_list *mailmap)
 {
 	size_t buf_offset = 0;
 
diff --git a/revision.c b/revision.c
index 14dca903b6..6ad3665204 100644
--- a/revision.c
+++ b/revision.c
@@ -3792,7 +3792,7 @@ static int commit_match(struct commit *commit, struct rev_info *opt)
 		if (!buf.len)
 			strbuf_addstr(&buf, message);
 
-		commit_rewrite_person(&buf, commit_headers, opt->mailmap);
+		apply_mailmap_to_header(&buf, commit_headers, opt->mailmap);
 	}
 
 	/* Append "fake" message parts as needed */