diff --git a/master/slave_config.c b/master/slave_config.c
index cf5d501f..390055d4 100644
--- a/master/slave_config.c
+++ b/master/slave_config.c
@@ -1248,6 +1248,7 @@ EXPORT_SYMBOL(ecrt_slave_config_pdo_mapping_add);
 EXPORT_SYMBOL(ecrt_slave_config_pdo_mapping_clear);
 EXPORT_SYMBOL(ecrt_slave_config_pdos);
 EXPORT_SYMBOL(ecrt_slave_config_reg_pdo_entry);
+EXPORT_SYMBOL(ecrt_slave_config_reg_pdo_entry_pos);
 EXPORT_SYMBOL(ecrt_slave_config_dc);
 EXPORT_SYMBOL(ecrt_slave_config_sdo);
 EXPORT_SYMBOL(ecrt_slave_config_sdo8);