diff -ur percona-server-5.7.35-38.orig/vio/viosslfactories.c percona-server-5.7.35-38/vio/viosslfactories.c
--- percona-server-5.7.35-38.orig/vio/viosslfactories.c	2021-11-24 19:48:22.417746172 +0100
+++ percona-server-5.7.35-38/vio/viosslfactories.c	2021-11-24 19:48:50.473812651 +0100
@@ -200,7 +200,7 @@
     key_file= cert_file;
 
   if (cert_file &&
-      SSL_CTX_use_certificate_file(ctx, cert_file, SSL_FILETYPE_PEM) <= 0)
+      SSL_CTX_use_certificate_chain_file(ctx, cert_file) <= 0)
   {
     *error= SSL_INITERR_CERT;
     DBUG_PRINT("error",("%s from file '%s'", sslGetErrString(*error), cert_file));