diff --git a/crypto/symhacks.h b/crypto/symhacks.h
index f63b1dfffb..a6c2f1b809 100644
--- a/crypto/symhacks.h
+++ b/crypto/symhacks.h
@@ -147,8 +147,10 @@
 #define SSL_get_ex_data_X509_STORE_CTX_idx      SSL_get_ex_d_X509_STORE_CTX_idx
 #undef SSL_add_file_cert_subjects_to_stack
 #define SSL_add_file_cert_subjects_to_stack     SSL_add_file_cert_subjs_to_stk
+#if 0 /* This function is not defined i VMS. */
 #undef SSL_add_dir_cert_subjects_to_stack
 #define SSL_add_dir_cert_subjects_to_stack      SSL_add_dir_cert_subjs_to_stk
+#endif
 #undef SSL_CTX_use_certificate_chain_file
 #define SSL_CTX_use_certificate_chain_file      SSL_CTX_use_cert_chain_file
 #undef SSL_CTX_set_cert_verify_callback