diff --git a/master/pdo.c b/master/pdo.c
index 9271f59373358cdd4bb1bba479aa754e78f8326f..289767470dadb7cf399f0d87f5ce61c409a0a165 100644
--- a/master/pdo.c
+++ b/master/pdo.c
@@ -53,7 +53,6 @@ void ec_pdo_init(
     pdo->sync_index = -1; // not assigned 
     pdo->name = NULL;
     INIT_LIST_HEAD(&pdo->entries);
-    pdo->default_config = 0;
 }
 
 /*****************************************************************************/
@@ -67,7 +66,6 @@ int ec_pdo_init_copy(ec_pdo_t *pdo, const ec_pdo_t *other_pdo)
     pdo->sync_index = other_pdo->sync_index;
     pdo->name = NULL;
     INIT_LIST_HEAD(&pdo->entries);
-    pdo->default_config = other_pdo->default_config;
 
     if (ec_pdo_set_name(pdo, other_pdo->name))
         goto out_return;
diff --git a/master/pdo.h b/master/pdo.h
index 3c7ecd2d0ea16ccd989bd14559c4bb04d34b2a18..ffb462c9c3812a206d8b13987ac32f696488f5e1 100644
--- a/master/pdo.h
+++ b/master/pdo.h
@@ -59,8 +59,6 @@ typedef struct {
     int8_t sync_index; /**< Assigned sync manager. */
     char *name; /**< Pdo name. */
     struct list_head entries; /**< List of Pdo entries. */
-    unsigned int default_config; /**< The entries contain the default Pdo
-                                   configuration. */
 } ec_pdo_t;
 
 /*****************************************************************************/
diff --git a/master/slave_config.c b/master/slave_config.c
index 60aa7eff37a7e4e85b74030a6cb658c38be6daea..700bd15c88dec2c7fa7b9ffbac74f2c120f28316 100644
--- a/master/slave_config.c
+++ b/master/slave_config.c
@@ -258,8 +258,6 @@ void ec_slave_config_load_default_mapping(
         EC_DBG("Loading default configuration for Pdo 0x%04X in"
                 " config %u:%u.\n", pdo->index, sc->alias, sc->position);
 
-    pdo->default_config = 1;
-
     if (!sc->slave) {
         EC_WARN("Failed to load default Pdo configuration for %u:%u:"
                 " Slave not found.\n", sc->alias, sc->position);