diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 636c47a39..71cfaaf84 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -77,7 +77,8 @@ submit the change with your pull request.
 - Jim Stallings / [jestallin](https://github.com/jestallin)
 - Alyssa Ransbury / [alran](https://github.com/alran)
 - Thomas Countz / [thomascountz](https://github.com/thomascountz)
+- Arun Kumar / [arun1595](https://github.com/arun1595)
 
 ## Bots
 
-- Security and Dependency Updates / [deppbot](https://github.com/deppbot)
\ No newline at end of file
+- Security and Dependency Updates / [deppbot](https://github.com/deppbot)
diff --git a/app/models/post.rb b/app/models/post.rb
index 4a9f0e864..d16f8ac09 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -39,9 +39,7 @@ class Post < ActiveRecord::Base
   default_scope { order("created_at desc") }
 
   validates :subject,
-    format: {
-      with: /\S/
-    },
+    presence: true,
     length: { maximum: 255 }
 
   def author_date_subject