diff --git a/app/controllers/page_contents_controller.rb b/app/controllers/page_contents_controller.rb
index 0221580..fc005d3 100644
--- a/app/controllers/page_contents_controller.rb
+++ b/app/controllers/page_contents_controller.rb
@@ -18,7 +18,7 @@ class PageContentsController < OrbitAdminController
     request = OrbitHelper.request
     meta_desc = html.nil? ? "" : ActionView::Base.full_sanitizer.sanitize(html)[0..200]
     doc = Nokogiri::HTML( html )
-    img_srcs = doc.css('img').map{ |i| i['src'] }
+    img_srcs = doc.css('img').map{ |i| i['src'] }.compact
     metas = [{"property" => "og:description", "content" => meta_desc},{"property" => "og:type", "content" => "Article"}]
     if img_srcs.count > 0
       metas << {"property" => "og:image", "content" => URI.join(request.base_url, URI.encode(img_srcs[0])).to_s}