diff --git a/db/migrate/20140605174230_fix_vide_embed_urls.rb b/db/migrate/20140605174230_fix_vide_embed_urls.rb
new file mode 100644
index 00000000..a6edb08c
--- /dev/null
+++ b/db/migrate/20140605174230_fix_vide_embed_urls.rb
@@ -0,0 +1,7 @@
+class FixVideEmbedUrls < ActiveRecord::Migration
+  def change
+    execute "
+    UPDATE projects SET video_embed_url = regexp_replace(video_embed_url, '^(\\w)', '//\\1');
+    "
+  end
+end