--- 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)