diff --git a/views/404.jade b/views/404.jade
index 3a76720ff4..f2eceed8fa 100644
--- a/views/404.jade
+++ b/views/404.jade
@@ -1,4 +1,4 @@
-doctype 5
+doctype html
 html
   head
     title The page you were looking for doesn't exist (404)
diff --git a/views/500.jade b/views/500.jade
index f5b33c0479..e117290875 100644
--- a/views/500.jade
+++ b/views/500.jade
@@ -1,4 +1,4 @@
-doctype 5
+doctype html
 html
   head
     title We're sorry, but something went wrong (500)