diff --git a/libmariadb/mariadb_lib.c b/libmariadb/mariadb_lib.c
index 32c23bda..5122166c 100644
--- a/libmariadb/mariadb_lib.c
+++ b/libmariadb/mariadb_lib.c
@@ -1357,7 +1357,11 @@ mysql_init(MYSQL *mysql)
   return mysql;
 error:
   if (mysql->free_me)
+  {
+    if (mysql->net.extension)
+      free(mysql->net.extension);
     free(mysql);
+  }
   return 0;
 }