diff --git a/databases/mysql-connector-c/files/patch-sql-common_client__authentication.cc b/databases/mysql-connector-c/files/patch-sql-common_client__authentication.cc
new file mode 100644
index 000000000000..76da9a91be1f
--- /dev/null
+++ b/databases/mysql-connector-c/files/patch-sql-common_client__authentication.cc
@@ -0,0 +1,15 @@
+sql-common/client_authentication.cc:86:56: error: comparison between pointer and integer ('char *' and 'int')
+      mysql->options.extension->server_public_key_path != '\0')
+      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~
+
+--- sql-common/client_authentication.cc.orig	2018-08-27 19:39:51 UTC
++++ sql-common/client_authentication.cc
+@@ -83,7 +83,7 @@ RSA *rsa_init(MYSQL *mysql)
+ 
+   if (mysql->options.extension != NULL &&
+       mysql->options.extension->server_public_key_path != NULL &&
+-      mysql->options.extension->server_public_key_path != '\0')
++      *mysql->options.extension->server_public_key_path != '\0')
+   {
+     pub_key_file= fopen(mysql->options.extension->server_public_key_path,
+                         "r");