diff --git a/lib/sir_trevor_rails/blocks/video_block.rb b/lib/sir_trevor_rails/blocks/video_block.rb
index 759dbb7..11b4d7d 100644
--- a/lib/sir_trevor_rails/blocks/video_block.rb
+++ b/lib/sir_trevor_rails/blocks/video_block.rb
@@ -2,8 +2,8 @@ module SirTrevorRails
   module Blocks
     class VideoBlock < SirTrevorRails::Block
       def to_partial_path
-        "sir_trevor/blocks/videos/" << self.source
+        "sir_trevor/blocks/videos/" << (self.source || 'youtube')
       end
     end
   end
-end
\ No newline at end of file
+end