diff --git a/libasciidoc_test.go b/libasciidoc_test.go
index 5cf91786..3fe78141 100644
--- a/libasciidoc_test.go
+++ b/libasciidoc_test.go
@@ -268,7 +268,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 				filename := "test/includes/chapter-a.adoc"
 				stat, err := os.Stat(filename)
 				Expect(err).NotTo(HaveOccurred())
@@ -390,7 +391,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 				Expect(RenderHTML(source,
 					configuration.WithAttribute(types.AttrDocType, "manpage"),
 					configuration.WithLastUpdated(lastUpdated),
@@ -469,7 +471,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 				Expect(RenderHTML(source,
 					configuration.WithAttribute(types.AttrDocType, "manpage"),
 					configuration.WithLastUpdated(lastUpdated),
@@ -505,7 +508,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 				Expect(Render(source,
 					configuration.WithBackEnd("html5"),
 					configuration.WithLastUpdated(lastUpdated),
@@ -540,7 +544,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 				Expect(Render(source,
 					configuration.WithBackEnd("xhtml5"),
 					configuration.WithLastUpdated(lastUpdated),
diff --git a/pkg/renderer/sgml/html5/document_details_test.go b/pkg/renderer/sgml/html5/document_details_test.go
index 1d0040bd..73dbbcc1 100644
--- a/pkg/renderer/sgml/html5/document_details_test.go
+++ b/pkg/renderer/sgml/html5/document_details_test.go
@@ -55,7 +55,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			now := time.Now()
 			Expect(RenderHTML(source, configuration.WithHeaderFooter(true), configuration.WithLastUpdated(now))).To(MatchHTMLTemplate(expected, now))
 		})
@@ -93,7 +94,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			now := time.Now()
 			Expect(RenderHTML(source, configuration.WithHeaderFooter(true), configuration.WithLastUpdated(now))).
 				To(MatchHTMLTemplate(expected, now))
@@ -132,7 +134,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
@@ -163,7 +166,8 @@ a paragraph`
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
@@ -198,7 +202,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
@@ -228,7 +233,8 @@ a paragraph`
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
diff --git a/pkg/renderer/sgml/html5/html5.go b/pkg/renderer/sgml/html5/html5.go
index 70ec04be..4e89fbad 100644
--- a/pkg/renderer/sgml/html5/html5.go
+++ b/pkg/renderer/sgml/html5/html5.go
@@ -26,7 +26,7 @@ const (
 		"</div>\n" +
 		"</div>\n{{ end }}" +
 		"</body>\n" +
-		"</html>"
+		"</html>\n"
 
 	articleHeaderTmpl = "<div id=\"header\">\n" +
 		"<h1>{{ .Header }}</h1>\n" +
diff --git a/pkg/renderer/sgml/html5/html5_test.go b/pkg/renderer/sgml/html5/html5_test.go
index f285e8be..376cbb35 100644
--- a/pkg/renderer/sgml/html5/html5_test.go
+++ b/pkg/renderer/sgml/html5/html5_test.go
@@ -37,7 +37,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 		now := time.Now()
 		Expect(RenderHTML(source, configuration.WithHeaderFooter(true),
 			configuration.WithCSS("/path/to/style.css"),
@@ -70,7 +71,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 		now := time.Now()
 		Expect(RenderHTML(source, configuration.WithHeaderFooter(true),
 			configuration.WithCSS("/path/to/style.css"),
@@ -103,7 +105,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 		now := time.Now()
 		Expect(RenderHTML(source, configuration.WithHeaderFooter(true),
 			configuration.WithCSS("/path/to/style.css"),
@@ -321,7 +324,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 		now := time.Now()
 		Expect(RenderHTML(source, configuration.WithFilename("test.adoc"),
 			configuration.WithAttributes(map[string]string{
diff --git a/pkg/renderer/sgml/xhtml5/document_details_test.go b/pkg/renderer/sgml/xhtml5/document_details_test.go
index 36cb39a0..c7d6da31 100644
--- a/pkg/renderer/sgml/xhtml5/document_details_test.go
+++ b/pkg/renderer/sgml/xhtml5/document_details_test.go
@@ -55,7 +55,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			now := time.Now()
 			Expect(RenderXHTML(source, configuration.WithHeaderFooter(true), configuration.WithLastUpdated(now))).To(MatchHTMLTemplate(expected, now))
 		})
@@ -93,7 +94,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			now := time.Now()
 			Expect(RenderXHTML(source, configuration.WithHeaderFooter(true), configuration.WithLastUpdated(now))).
 				To(MatchHTMLTemplate(expected, now))
@@ -132,7 +134,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderXHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
@@ -163,7 +166,8 @@ a paragraph`
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderXHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
@@ -206,7 +210,8 @@ a paragraph`
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderXHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
@@ -249,7 +254,8 @@ a paragraph`
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderXHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
@@ -284,7 +290,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderXHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
@@ -314,7 +321,8 @@ a paragraph`
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 			Expect(RenderXHTML(source,
 				configuration.WithHeaderFooter(true),
 				configuration.WithLastUpdated(now),
diff --git a/pkg/renderer/sgml/xhtml5/xhtml5.go b/pkg/renderer/sgml/xhtml5/xhtml5.go
index 0a7eb74c..92ee8837 100644
--- a/pkg/renderer/sgml/xhtml5/xhtml5.go
+++ b/pkg/renderer/sgml/xhtml5/xhtml5.go
@@ -26,5 +26,5 @@ const (
 		"</div>\n" +
 		"</div>\n{{ end }}" +
 		"</body>\n" +
-		"</html>"
+		"</html>\n"
 )
diff --git a/pkg/renderer/sgml/xhtml5/xhtml5_test.go b/pkg/renderer/sgml/xhtml5/xhtml5_test.go
index 821dc458..aea2fd5b 100644
--- a/pkg/renderer/sgml/xhtml5/xhtml5_test.go
+++ b/pkg/renderer/sgml/xhtml5/xhtml5_test.go
@@ -37,7 +37,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 		now := time.Now()
 		Expect(RenderXHTML(source, configuration.WithHeaderFooter(true),
 			configuration.WithCSS("/path/to/style.css"),
@@ -70,7 +71,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 		now := time.Now()
 		Expect(RenderXHTML(source, configuration.WithHeaderFooter(true),
 			configuration.WithCSS("/path/to/style.css"),
@@ -103,7 +105,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 		now := time.Now()
 		Expect(RenderXHTML(source, configuration.WithHeaderFooter(true),
 			configuration.WithCSS("/path/to/style.css"),
@@ -321,7 +324,8 @@ Last updated {{.LastUpdated}}
 </div>
 </div>
 </body>
-</html>`
+</html>
+`
 		now := time.Now()
 		Expect(RenderXHTML(source, configuration.WithFilename("test.adoc"),
 			configuration.WithAttributes(map[string]string{