diff --git a/src/who.c b/src/who.c
index fc46b6fe7..46cb71c9e 100644
--- a/src/who.c
+++ b/src/who.c
@@ -605,6 +605,8 @@ who (const char *filename)
     list_entries_who (n_users, utmp_buf);
   else
     scan_entries (n_users, utmp_buf);
+
+  free (utmp_buf);
 }
 
 void