diff --git a/source/structure/r5.sindri.json b/source/structure/r5.sindri.json
index 94c4e24..998bd5e 100644
--- a/source/structure/r5.sindri.json
+++ b/source/structure/r5.sindri.json
@@ -136,7 +136,7 @@
 					"nullable": false
 				},
 				{
-					"name": "group",
+					"name": "group_name",
 					"type": "string_medium",
 					"nullable": false
 				},
@@ -160,7 +160,7 @@
 				{
 					"kind": "unique",
 					"parameters": {
-						"fields": ["member_id","group"]
+						"fields": ["member_id","group_name"]
 					}
 				}
 			]