diff --git a/lib/gollum/views/history.rb b/lib/gollum/views/history.rb
index eaf671f1..ff486564 100644
--- a/lib/gollum/views/history.rb
+++ b/lib/gollum/views/history.rb
@@ -20,7 +20,7 @@ module Precious
             :author   => v.author.name.respond_to?(:force_encoding) ? v.author.name.force_encoding('UTF-8') : v.author.name,
             :message  => v.message.respond_to?(:force_encoding) ? v.message.force_encoding('UTF-8') : v.message,
             :date     => v.authored_date.strftime("%B %d, %Y"),
-            :gravatar => Digest::MD5.hexdigest(v.author.email),
+            :gravatar => Digest::MD5.hexdigest(v.author.email.strip.downcase),
             :identicon => self._identicon_code(v.author.email),
             :date_full=> v.authored_date,
           }