diff --git a/contrib/dlz/drivers/dlz_mysql_driver.c b/contrib/dlz/drivers/dlz_mysql_driver.c
index afe906a7fb..86a7f59e01 100644
--- a/contrib/dlz/drivers/dlz_mysql_driver.c
+++ b/contrib/dlz/drivers/dlz_mysql_driver.c
@@ -763,9 +763,6 @@ mysql_create(const char *dlzname, unsigned int argc, char *argv[],
 	char *endp;
 	int j;
 	unsigned int flags = 0;
-#if MYSQL_VERSION_ID >= 50000
-	my_bool auto_reconnect = 1;
-#endif /* if MYSQL_VERSION_ID >= 50000 */
 
 	UNUSED(driverarg);
 	UNUSED(dlzname);
@@ -901,21 +898,21 @@ mysql_create(const char *dlzname, unsigned int argc, char *argv[],
 	pass = getParameterValue(argv[1], "pass=");
 	socket = getParameterValue(argv[1], "socket=");
 
-#if MYSQL_VERSION_ID >= 50000
 	/* enable automatic reconnection. */
 	if (mysql_options((MYSQL *)dbi->dbconn, MYSQL_OPT_RECONNECT,
-			  &auto_reconnect) != 0)
+			  &(my_bool){ 1 }) != 0)
 	{
 		isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
 			      DNS_LOGMODULE_DLZ, ISC_LOG_WARNING,
 			      "mysql driver failed to set "
-			      "MYSQL_OPT_RECONNECT option, continuing");
+			      "MYSQL_OPT_RECONNECT option, "
+			      "continuing");
 	}
-#endif /* if MYSQL_VERSION_ID >= 50000 */
 
-	for (j = 0; dbc == NULL && j < 4; j++)
+	for (j = 0; dbc == NULL && j < 4; j++) {
 		dbc = mysql_real_connect((MYSQL *)dbi->dbconn, host, user, pass,
 					 dbname, port, socket, flags);
+	}
 
 	/* let user know if we couldn't connect. */
 	if (dbc == NULL) {
diff --git a/contrib/dlz/modules/mysql/dlz_mysql_dynamic.c b/contrib/dlz/modules/mysql/dlz_mysql_dynamic.c
index de6beac736..33d307975d 100644
--- a/contrib/dlz/modules/mysql/dlz_mysql_dynamic.c
+++ b/contrib/dlz/modules/mysql/dlz_mysql_dynamic.c
@@ -816,9 +816,6 @@ dlz_create(const char *dlzname, unsigned int argc, char *argv[], void **dbdata,
 	char *endp;
 	int j;
 	const char *helper_name;
-#if MYSQL_VERSION_ID >= 50000
-	my_bool auto_reconnect = 1;
-#endif /* if MYSQL_VERSION_ID >= 50000 */
 #if PTHREADS
 	int dbcount;
 	int i;
@@ -1016,17 +1013,15 @@ dlz_create(const char *dlzname, unsigned int argc, char *argv[], void **dbdata,
 
 		dbc = NULL;
 
-#if MYSQL_VERSION_ID >= 50000
 		/* enable automatic reconnection. */
 		if (mysql_options((MYSQL *)dbi->dbconn, MYSQL_OPT_RECONNECT,
-				  &auto_reconnect) != 0)
+				  &(my_bool){ 1 }) != 0)
 		{
 			mysql->log(ISC_LOG_WARNING, "MySQL module failed to "
 						    "set "
 						    "MYSQL_OPT_RECONNECT "
 						    "option, continuing");
 		}
-#endif /* if MYSQL_VERSION_ID >= 50000 */
 
 		for (j = 0; dbc == NULL && j < 4; j++) {
 			dbc = mysql_real_connect(
diff --git a/contrib/dlz/modules/mysqldyn/dlz_mysqldyn_mod.c b/contrib/dlz/modules/mysqldyn/dlz_mysqldyn_mod.c
index d6f759d414..cb0620fde8 100644
--- a/contrib/dlz/modules/mysqldyn/dlz_mysqldyn_mod.c
+++ b/contrib/dlz/modules/mysqldyn/dlz_mysqldyn_mod.c
@@ -1024,10 +1024,6 @@ dlz_create(const char *dlzname, unsigned int argc, char *argv[], void **dbdata,
 	 */
 	if (mysql_thread_safe()) {
 		for (n = 0; n < MAX_DBI; n++) {
-#if MYSQL_VERSION_ID >= 50000
-			my_bool opt = 1;
-#endif
-
 			dlz_mutex_init(&state->db[n].mutex, NULL);
 			dlz_mutex_lock(&state->db[n].mutex);
 			state->db[n].id = n;
@@ -1035,10 +1031,8 @@ dlz_create(const char *dlzname, unsigned int argc, char *argv[], void **dbdata,
 			state->db[n].sock = mysql_init(NULL);
 			mysql_options(state->db[n].sock,
 				      MYSQL_READ_DEFAULT_GROUP, modname);
-#if MYSQL_VERSION_ID >= 50000
 			mysql_options(state->db[n].sock, MYSQL_OPT_RECONNECT,
-				      &opt);
-#endif
+				      &(my_bool){ 1 });
 			dlz_mutex_unlock(&state->db[n].mutex);
 		}