diff --git a/master/ioctl.c b/master/ioctl.c
index ce675622..b27f72ff 100755
--- a/master/ioctl.c
+++ b/master/ioctl.c
@@ -4008,7 +4008,7 @@ static ATTRIBUTES int ec_ioctl_slave_foe_read(
         ret = -EIO;
     } else {
         if (request.data_size > io.buffer_size) {
-            EC_MASTER_ERR(master, "Buffer too small.\n");
+            EC_SLAVE_ERR(slave, "%s(): Buffer too small.\n", __func__);
             ec_foe_request_clear(&request);
             return -EOVERFLOW;
         }
diff --git a/master/master.c b/master/master.c
index 20aedf5b..0dd92bd7 100644
--- a/master/master.c
+++ b/master/master.c
@@ -3089,7 +3089,7 @@ int ecrt_master_sdo_upload(ec_master_t *master, uint16_t slave_position,
         }
     } else {
         if (request.data_size > target_size) {
-            EC_MASTER_ERR(master, "Buffer too small.\n");
+            EC_SLAVE_ERR(slave, "%s(): Buffer too small.\n", __func__);
             ret = -EOVERFLOW;
         }
         else {
@@ -3247,7 +3247,7 @@ int ecrt_master_read_idn(ec_master_t *master, uint16_t slave_position,
         ret = -EIO;
     } else { // success
         if (request.data_size > target_size) {
-            EC_MASTER_ERR(master, "Buffer too small.\n");
+            EC_SLAVE_ERR(slave, "%s(): Buffer too small.\n", __func__);
             ret = -EOVERFLOW;
         }
         else { // data fits in buffer