--- tls/tls_internal.h.orig	Sun Jul  9 06:16:17 2017
+++ tls/tls_internal.h	Mon Jul 17 06:10:01 2017
@@ -26,7 +26,9 @@
 
 __BEGIN_HIDDEN_DECLS
 
+#ifndef _PATH_SSL_CA_FILE
 #define _PATH_SSL_CA_FILE "/etc/ssl/cert.pem"
+#endif
 
 #define TLS_CIPHERS_DEFAULT	"TLSv1.2+AEAD+ECDHE:TLSv1.2+AEAD+DHE"
 #define TLS_CIPHERS_COMPAT	"HIGH:!aNULL"