diff --git a/config/environment.rb b/config/environment.rb
index 7a8ae0f0..60471fb5 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -79,3 +79,6 @@
   # Set app to Eastern time for now -- we'll have configurable time zones soon enough
   config.time_zone = 'Eastern Time (US & Canada)'
 end
+
+# Now set up Haml properties.
+Haml::Template.options[:format] = :html4
\ No newline at end of file