diff --git a/src/main/java/com/overzealous/remark/Remark.java b/src/main/java/com/overzealous/remark/Remark.java
index a0697d3..99b162f 100644
--- a/src/main/java/com/overzealous/remark/Remark.java
+++ b/src/main/java/com/overzealous/remark/Remark.java
@@ -85,7 +85,8 @@ public Remark(Options options) {
                                               "h1", "h2", "h3", "h4", "h5", "h6",
                                               "table", "tbody", "td", "tfoot", "th", "thead", "tr",
                                               "hr",
-                                              "span", "font")
+                                              "span", "font",
+                                              "del", "strike", "s")
 									  .addAttributes("th", "colspan", "align", "style")
 									  .addAttributes("td", "colspan", "align", "style")
 									  .addAttributes(":all", "title", "style");
diff --git a/src/main/java/com/overzealous/remark/convert/DocumentConverter.java b/src/main/java/com/overzealous/remark/convert/DocumentConverter.java
index 74cc284..09975a9 100644
--- a/src/main/java/com/overzealous/remark/convert/DocumentConverter.java
+++ b/src/main/java/com/overzealous/remark/convert/DocumentConverter.java
@@ -85,7 +85,7 @@ public DocumentConverter(Options options) {
 	}
 
 	private void configureNodes() {
-		addInlineNode(new InlineStyle(),	"i,em,b,strong,font,span");
+		addInlineNode(new InlineStyle(),	"i,em,b,strong,font,span,del,strike,s");
 		addInlineNode(new InlineCode(),		"code,tt");
 		addInlineNode(new Image(),			"img");
 		addInlineNode(new Anchor(),			"a");
diff --git a/src/test/resources/conversions/html/unknownHTML.html b/src/test/resources/conversions/html/unknownHTML.html
index 1dcb4e3..ab49400 100644
--- a/src/test/resources/conversions/html/unknownHTML.html
+++ b/src/test/resources/conversions/html/unknownHTML.html
@@ -2,6 +2,6 @@
 	Division
 </div>
 
-<p><foo-bar class="fred">Foo Bar</foo-bar></p>
+<p><foo-bar class="foo">Foo Bar</foo-bar></p>
 
 <p><var class="barney"><em>Variable</em></var></p>
\ No newline at end of file
diff --git a/src/test/resources/conversions/markdown/unknownHTML-allowed.md b/src/test/resources/conversions/markdown/unknownHTML-allowed.md
index abcecdf..5d1ac67 100644
--- a/src/test/resources/conversions/markdown/unknownHTML-allowed.md
+++ b/src/test/resources/conversions/markdown/unknownHTML-allowed.md
@@ -1,5 +1,5 @@
 Division
 
-<foo-bar class="fred">Foo Bar</foo-bar>
+<foo-bar class="foo">Foo Bar</foo-bar>
 
 <var><em>Variable</em></var>
\ No newline at end of file