diff --git a/src/shared/gatt-db.c b/src/shared/gatt-db.c
index 36316af..90c09bb 100644
--- a/src/shared/gatt-db.c
+++ b/src/shared/gatt-db.c
@@ -48,7 +48,7 @@ struct gatt_db {
 struct gatt_db_attribute {
 	uint16_t handle;
 	bt_uuid_t uuid;
-	uint8_t permissions;
+	uint32_t permissions;
 	uint16_t value_len;
 	uint8_t *value;
 
@@ -269,7 +269,7 @@ static void set_attribute_data(struct gatt_db_attribute *attribute,
 
 uint16_t gatt_db_add_characteristic(struct gatt_db *db, uint16_t handle,
 						const bt_uuid_t *uuid,
-						uint8_t permissions,
+						uint32_t permissions,
 						uint8_t properties,
 						gatt_db_read_t read_func,
 						gatt_db_write_t write_func,
@@ -317,7 +317,7 @@ uint16_t gatt_db_add_characteristic(struct gatt_db *db, uint16_t handle,
 
 uint16_t gatt_db_add_char_descriptor(struct gatt_db *db, uint16_t handle,
 						const bt_uuid_t *uuid,
-						uint8_t permissions,
+						uint32_t permissions,
 						gatt_db_read_t read_func,
 						gatt_db_write_t write_func,
 						void *user_data)
diff --git a/src/shared/gatt-db.h b/src/shared/gatt-db.h
index 3d46730..350e34e 100644
--- a/src/shared/gatt-db.h
+++ b/src/shared/gatt-db.h
@@ -41,7 +41,7 @@ typedef void (*gatt_db_write_t) (uint16_t handle, uint16_t offset,
 
 uint16_t gatt_db_add_characteristic(struct gatt_db *db, uint16_t handle,
 						const bt_uuid_t *uuid,
-						uint8_t permissions,
+						uint32_t permissions,
 						uint8_t properties,
 						gatt_db_read_t read_func,
 						gatt_db_write_t write_func,
@@ -49,7 +49,7 @@ uint16_t gatt_db_add_characteristic(struct gatt_db *db, uint16_t handle,
 
 uint16_t gatt_db_add_char_descriptor(struct gatt_db *db, uint16_t handle,
 						const bt_uuid_t *uuid,
-						uint8_t permissions,
+						uint32_t permissions,
 						gatt_db_read_t read_func,
 						gatt_db_write_t write_func,
 						void *user_data);