diff --git a/app/api/mobile/entities/user.rb b/app/api/mobile/entities/user.rb
index 5c6b95771..30a2a7edd 100644
--- a/app/api/mobile/entities/user.rb
+++ b/app/api/mobile/entities/user.rb
@@ -13,7 +13,7 @@ module Mobile
             else
               case f
                 when :img_url
-                  "/images/#{url_to_avatar(u)}"+"?t="+Time.now.strftime('%Y-%m-%d')
+                  "/images/#{url_to_avatar(u)}"
                 when :gender
                   u.nil? || u.user_extensions.nil? || u.user_extensions.gender.nil? ? 0 : u.user_extensions.gender
                 when :work_unit