diff --git a/scst/src/scst_priv.h b/scst/src/scst_priv.h
index ae1157d36..f0f87d8e3 100644
--- a/scst/src/scst_priv.h
+++ b/scst/src/scst_priv.h
@@ -893,6 +893,27 @@ void scst_cm_exit(void);
 static inline int scst_cm_on_dev_register(struct scst_device *dev) { return 0; }
 static inline void scst_cm_on_dev_unregister(struct scst_device *dev) {}
 
+static inline int scst_cm_on_add_acg(struct scst_acg *acg)
+{
+	return 0;
+}
+
+static inline void scst_cm_on_del_acg(struct scst_acg *acg)
+{
+}
+
+static inline int scst_cm_on_add_lun(struct scst_acg_dev *acg_dev, uint64_t lun,
+				     unsigned int *flags)
+{
+	return 0;
+}
+
+static inline bool scst_cm_on_del_lun(struct scst_acg_dev *acg_dev,
+				      bool gen_report_luns_changed)
+{
+	return gen_report_luns_changed;
+}
+
 static inline int scst_cm_parse_descriptors(struct scst_cmd *cmd)
 {
 	scst_set_cmd_error(cmd, SCST_LOAD_SENSE(scst_sense_invalid_opcode));
diff --git a/scst/src/scst_proc.c b/scst/src/scst_proc.c
index 26b99c3fe..0ade29717 100644
--- a/scst/src/scst_proc.c
+++ b/scst/src/scst_proc.c
@@ -2072,7 +2072,7 @@ static ssize_t scst_proc_groups_devices_write(struct file *file,
 
 		rc = scst_acg_add_lun(acg, NULL, dev, virt_lun,
 				read_only ? SCST_ADD_LUN_READ_ONLY : 0,
-				false, NULL);
+				NULL);
 		if (rc) {
 			res = rc;
 			goto out_free_up;