1 files changed, 2 insertions, 0 deletions

diff --git a/src/lib/libcrypto/doc/OBJ_nid2obj.pod b/src/lib/libcrypto/doc/OBJ_nid2obj.pod
index 7dcc07923f..1e45dd40f6 100644
--- a/src/lib/libcrypto/doc/OBJ_nid2obj.pod
+++ b/src/lib/libcrypto/doc/OBJ_nid2obj.pod
@@ -8,6 +8,8 @@ functions
 
 =head1 SYNOPSIS
 
+ #include <openssl/objects.h>
+
  ASN1_OBJECT * OBJ_nid2obj(int n);
  const char *  OBJ_nid2ln(int n);
  const char *  OBJ_nid2sn(int n);