--- a/modules/ssl/ssl_engine_config.c	2018/10/16 12:53:18	1844001

+++ b/modules/ssl/ssl_engine_config.c	2018/10/16 12:55:01	1844002

@@ -433,6 +433,8 @@

     cfgMergeString(pkp->cert_file);

     cfgMergeString(pkp->cert_path);

     cfgMergeString(pkp->ca_cert_file);

+    cfgMergeString(pkp->certs);

+    cfgMergeString(pkp->ca_certs);

 }

 void *ssl_config_perdir_merge(apr_pool_t *p, void *basev, void *addv)