diff --git a/shared/domain/rank.ts b/shared/domain/rank.ts
index 25264cee6..6919d67ba 100644
--- a/shared/domain/rank.ts
+++ b/shared/domain/rank.ts
@@ -35,7 +35,13 @@ export class RankParam {
                 this.ce = role.ce;
             }
         }
-        if(role.updatedAt) this.updatedAt = getSeconds(role.updatedAt);
+        if(role.updatedAt) {
+            if(typeof role.updatedAt == 'number') {
+                this.updatedAt = role.updatedAt;
+            } else {
+                this.updatedAt = getSeconds(role.updatedAt);
+            }
+        } 
     }
 }