diff --git a/lib/sample/_layout.jade b/lib/sample/_layout.jade
index 040858b3..dd2d77b2 100644
--- a/lib/sample/_layout.jade
+++ b/lib/sample/_layout.jade
@@ -1,4 +1,4 @@
-!!!
+doctype
 html
   head
     link(rel="stylesheet", href="/main.css")
diff --git a/lib/templates/_layout.jade b/lib/templates/_layout.jade
index 2dc0b6bd..9620579d 100644
--- a/lib/templates/_layout.jade
+++ b/lib/templates/_layout.jade
@@ -1,4 +1,4 @@
-!!!
+doctype
 html(lang="en")
 	head
 		meta(charset="utf-8")
diff --git a/test/apps/basic/public/404.jade b/test/apps/basic/public/404.jade
index de93d2ad..3020b903 100644
--- a/test/apps/basic/public/404.jade
+++ b/test/apps/basic/public/404.jade
@@ -1,4 +1,4 @@
-!!!
+doctype
 html
 	head
 		style.
diff --git a/test/apps/basic/public/_layout.jade b/test/apps/basic/public/_layout.jade
index 4984b4f2..e7686925 100644
--- a/test/apps/basic/public/_layout.jade
+++ b/test/apps/basic/public/_layout.jade
@@ -1,4 +1,4 @@
-!!!
+doctype
 html
   head
     link(rel="stylesheet", href="/css/main.css")
diff --git a/test/apps/err-invalid-and-valid-stylsheets/public/_layout.jade b/test/apps/err-invalid-and-valid-stylsheets/public/_layout.jade
index 0b20f53b..1e2c411f 100644
--- a/test/apps/err-invalid-and-valid-stylsheets/public/_layout.jade
+++ b/test/apps/err-invalid-and-valid-stylsheets/public/_layout.jade
@@ -1,4 +1,4 @@
-!!!
+doctype
 html
   head
     link(rel="stylesheet", href="/css/main.css")
diff --git a/test/apps/err-invalid-vars/public/index.jade b/test/apps/err-invalid-vars/public/index.jade
index 58e3aa61..78668c92 100644
--- a/test/apps/err-invalid-vars/public/index.jade
+++ b/test/apps/err-invalid-vars/public/index.jade
@@ -1,4 +1,4 @@
-!!!
+doctype
 html
   head
     link(rel="stylesheet", href="/main.css", type="text/css")
diff --git a/test/apps/err-invalid-vars/public/style.jade b/test/apps/err-invalid-vars/public/style.jade
index c94b77c2..5c758d05 100644
--- a/test/apps/err-invalid-vars/public/style.jade
+++ b/test/apps/err-invalid-vars/public/style.jade
@@ -1,4 +1,4 @@
-!!!
+doctype
 html
   head
     link(rel="stylesheet", href="/bad.css", type="text/css")
diff --git a/test/apps/err-missing-404/public/_layout.jade b/test/apps/err-missing-404/public/_layout.jade
index 062079ba..4cc5ab3d 100644
--- a/test/apps/err-missing-404/public/_layout.jade
+++ b/test/apps/err-missing-404/public/_layout.jade
@@ -1,4 +1,4 @@
-!!!
+doctype
 html
   head
     link(rel="stylesheet", href="/css/main.css")