diff --git a/MySQLdb/_mysql.c b/MySQLdb/_mysql.c
index 2c2d453..562dd88 100644
--- a/MySQLdb/_mysql.c
+++ b/MySQLdb/_mysql.c
@@ -100,6 +100,10 @@ static int _mysql_server_init_done = 0;
 #define check_server_init(x) if (!_mysql_server_init_done) _mysql_server_init_done = 1
 #endif
 
+#if MYSQL_VERSION_ID >= 50500
+#define HAVE_OPENSSL 1
+#endif
+
 PyObject *
 _mysql_Exception(_mysql_ConnectionObject *c)
 {