diff --git a/app/models/article_block.rb b/app/models/article_block.rb
index 7a18ba0..64263a5 100644
--- a/app/models/article_block.rb
+++ b/app/models/article_block.rb
@@ -17,7 +17,7 @@ class ArticleBlock < Block
   end
   
   def article_id= value
-    self.settings[:article_id] = value
+    self.settings[:article_id] = value.to_i
   end
 
   def article(reload = false)
--
libgit2 0.21.2