1 files changed, 1 insertions, 0 deletions
diff --git a/g10/main.h b/g10/main.h
index bf3df6417..179c06757 100644
--- a/g10/main.h
+++ b/g10/main.h
@@ -82,6 +82,7 @@ u16 checksum( byte *p, unsigned n );
 u16 checksum_mpi( gcry_mpi_t a );
 u32 buffer_to_u32( const byte *buffer );
 const byte *get_session_marker( size_t *rlen );
+int openpgp_cipher_blocklen (int algo);
 int openpgp_cipher_test_algo( int algo );
 const char *openpgp_cipher_algo_name (int algo);
 int openpgp_pk_test_algo( int algo );