diff --git a/activity.go b/activity.go
index b50c6e4..2a411ff 100644
--- a/activity.go
+++ b/activity.go
@@ -394,6 +394,10 @@ func extractattrto(obj junk.Junk) string {
 				return id
 			}
 		}
+		s, ok := a.(string)
+		if ok {
+			return s
+		}
 	}
 	return ""
 }