diff --git a/lib/slave_config.c b/lib/slave_config.c
index 5eaf416c7cdbd05c8aa39cc4291d82ab4b89e715..49ce635b4fcb85bc0bb17e6985878bad3c2310d3 100644
--- a/lib/slave_config.c
+++ b/lib/slave_config.c
@@ -473,13 +473,13 @@ void ecrt_slave_config_state(const ec_slave_config_t *sc,
 /*****************************************************************************/
 
 int ecrt_slave_config_idn(ec_slave_config_t *sc, uint16_t idn,
-        ec_al_state_t state, const uint8_t *data, size_t size)
+        ec_al_state_t al_state, const uint8_t *data, size_t size)
 {
     ec_ioctl_sc_idn_t io;
 
     io.config_index = sc->index;
     io.idn = idn;
-    io.state = state;
+    io.al_state = al_state;
     io.data = data;
     io.size = size;
 
diff --git a/master/cdev.c b/master/cdev.c
index 49deddd7504f73697127cb0d5cc30842df42b710..167a83de4761eea88487984503fc508157e09d70 100644
--- a/master/cdev.c
+++ b/master/cdev.c
@@ -2463,7 +2463,8 @@ int ec_cdev_ioctl_sc_idn(
 
     up(&master->master_sem); // FIXME
 
-    ret = ecrt_slave_config_idn(sc, ioctl.idn, ioctl.state, data, ioctl.size);
+    ret = ecrt_slave_config_idn(
+            sc, ioctl.idn, ioctl.al_state, data, ioctl.size);
     kfree(data);
     return ret;
 }
diff --git a/master/ioctl.h b/master/ioctl.h
index d21a67854829075aa9af7302527702ec3a1c0e16..2606822a038b95383cd8ae86664928aa3ddee0f6 100644
--- a/master/ioctl.h
+++ b/master/ioctl.h
@@ -56,7 +56,7 @@
  *
  * Increment this when changing the ioctl interface!
  */
-#define EC_IOCTL_VERSION_MAGIC 5
+#define EC_IOCTL_VERSION_MAGIC 6
 
 // Command-line tool
 #define EC_IOCTL_MODULE                EC_IOR(0x00, ec_ioctl_module_t)
@@ -583,7 +583,7 @@ typedef struct {
     // inputs
     uint32_t config_index;
     uint16_t idn;
-    ec_al_state_t state;
+    ec_al_state_t al_state;
     const uint8_t *data;
     size_t size;
 } ec_ioctl_sc_idn_t;