diff --git a/app/assets/javascripts/profile.js.coffee b/app/assets/javascripts/profile.js.coffee
index 01def4fe63e7ab2bffee02e2893a2584475181d2..d13c6007819847b080e9be15d624ba2cd28c35cb 100644
--- a/app/assets/javascripts/profile.js.coffee
+++ b/app/assets/javascripts/profile.js.coffee
@@ -31,7 +31,6 @@ class @Profile
       setTimeout ( -> # The cropper must be asynchronously initialized
         $modalCropImg.cropper
           aspectRatio: 1
-          autoCropArea: 1
           modal: false
           scalable: false
           rotatable: false
diff --git a/app/uploaders/avatar_uploader.rb b/app/uploaders/avatar_uploader.rb
index 239c99e06dc7136ce4903eb6f42587175491de6b..60ee80cf0024e0b4201c028ce92fd8309f0333cd 100644
--- a/app/uploaders/avatar_uploader.rb
+++ b/app/uploaders/avatar_uploader.rb
@@ -10,8 +10,15 @@ class AvatarUploader < CarrierWave::Uploader::Base
 
   process :cropper
 
+  def is_integer? string
+    true if Integer(string) rescue false
+  end
+
   def cropper
-    if model.instance_of? User
+    is_compliant = model.kind_of?(User) && is_integer?(model.avatar_crop_size)
+    is_compliant = is_compliant && is_integer?(model.avatar_crop_x) && is_integer?(model.avatar_crop_y)
+
+    if is_compliant
       manipulate! do |img|
         img.crop "#{model.avatar_crop_size}x#{model.avatar_crop_size}+#{model.avatar_crop_x}+#{model.avatar_crop_y}"
       end