diff --git a/lib/liquid/tag.rb b/lib/liquid/tag.rb
index c1195622..eb2934bc 100644
--- a/lib/liquid/tag.rb
+++ b/lib/liquid/tag.rb
@@ -31,7 +31,7 @@ module Liquid
     end
 
     def blank?
-      @blank || true
+      @blank || false
     end
 
     def parse_with_selected_parser(markup)
diff --git a/lib/liquid/tags/assign.rb b/lib/liquid/tags/assign.rb
index 45c6bed6..0af09761 100644
--- a/lib/liquid/tags/assign.rb
+++ b/lib/liquid/tags/assign.rb
@@ -29,6 +29,9 @@ module Liquid
       ''
     end
 
+    def blank?
+      true
+    end
   end
 
   Template.register_tag('assign', Assign)