diff --git a/app/models/concerns/avatarable.rb b/app/models/concerns/avatarable.rb
index 441afa106..b17a0bdbf 100644
--- a/app/models/concerns/avatarable.rb
+++ b/app/models/concerns/avatarable.rb
@@ -6,7 +6,7 @@ module Avatarable
 
   included do
     has_one_attached :avatar
-    validate :acceptable_avatar
+    validate :acceptable_avatar, if: -> { avatar.changed? }
   end
 
   def avatar_url