diff --git a/block_test.go b/block_test.go
index 46feb40..909f4a8 100644
--- a/block_test.go
+++ b/block_test.go
@@ -1601,7 +1601,9 @@ func TestTOC(t *testing.T) {
 		"#",
 		"",
 	}
-	doTestsBlock(t, tests, TOC)
+	doTestsParam(t, tests, TestParams{
+		HTMLFlags: UseXHTML | TOC,
+	})
 }
 
 func TestOmitContents(t *testing.T) {
@@ -1625,9 +1627,13 @@ func TestOmitContents(t *testing.T) {
 		"#\n\nfoo",
 		"",
 	}
-	doTestsBlock(t, tests, TOC|OmitContents)
+	doTestsParam(t, tests, TestParams{
+		HTMLFlags: UseXHTML | TOC | OmitContents,
+	})
 	// Now run again: make sure OmitContents implies TOC
-	doTestsBlock(t, tests, OmitContents)
+	doTestsParam(t, tests, TestParams{
+		HTMLFlags: UseXHTML | OmitContents,
+	})
 }
 
 func TestCompletePage(t *testing.T) {
diff --git a/helpers_test.go b/helpers_test.go
index 99ac806..ecefe2f 100644
--- a/helpers_test.go
+++ b/helpers_test.go
@@ -44,7 +44,6 @@ func execRecoverableTestSuite(t *testing.T, tests []string, params TestParams, s
 
 func runMarkdown(input string, params TestParams) string {
 	params.HTMLRendererParameters.Flags = params.HTMLFlags
-	params.HTMLRendererParameters.Extensions = params.Options.Extensions
 	renderer := NewHTMLRenderer(params.HTMLRendererParameters)
 	return string(Markdown([]byte(input), renderer, params.Options))
 }
@@ -54,8 +53,7 @@ func doTests(t *testing.T, tests []string) {
 	doTestsParam(t, tests, TestParams{
 		Options: DefaultOptions,
 		HTMLRendererParameters: HTMLRendererParameters{
-			Flags:      CommonHTMLFlags,
-			Extensions: CommonExtensions,
+			Flags: CommonHTMLFlags,
 		},
 	})
 }
diff --git a/html.go b/html.go
index 54f2bea..a4f0753 100644
--- a/html.go
+++ b/html.go
@@ -46,6 +46,8 @@ const (
 	SmartypantsDashes                             // Enable smart dashes (with Smartypants)
 	SmartypantsLatexDashes                        // Enable LaTeX-style dashes (with Smartypants)
 	SmartypantsAngledQuotes                       // Enable angled double quotes (with Smartypants) for double quotes rendering
+	TOC                                           // Generate a table of contents
+	OmitContents                                  // Skip the main contents (for a standalone table of contents)
 
 	TagName               = "[A-Za-z][A-Za-z0-9-]*"
 	AttributeName         = "[a-zA-Z_:][a-zA-Z0-9:._-]*"
@@ -90,8 +92,7 @@ type HTMLRendererParameters struct {
 	CSS   string // Optional CSS file URL (used if CompletePage is set)
 	Icon  string // Optional icon file URL (used if CompletePage is set)
 
-	Flags      HTMLFlags  // Flags allow customizing this renderer's behavior
-	Extensions Extensions // Extensions give Smartypants and HTML renderer access to Blackfriday's global extensions
+	Flags HTMLFlags // Flags allow customizing this renderer's behavior
 }
 
 // HTMLRenderer is a type that implements the Renderer interface for HTML output.
@@ -829,9 +830,9 @@ func (r *HTMLRenderer) Render(ast *Node) []byte {
 	//dump(ast)
 	var buff bytes.Buffer
 	r.writeDocumentHeader(&buff)
-	if r.Extensions&TOC != 0 || r.Extensions&OmitContents != 0 {
+	if r.Flags&TOC != 0 || r.Flags&OmitContents != 0 {
 		r.writeTOC(&buff, ast)
-		if r.Extensions&OmitContents != 0 {
+		if r.Flags&OmitContents != 0 {
 			return buff.Bytes()
 		}
 	}
diff --git a/markdown.go b/markdown.go
index 25a24c2..558b008 100644
--- a/markdown.go
+++ b/markdown.go
@@ -46,8 +46,6 @@ const (
 	AutoHeaderIDs                                 // Create the header ID from the text
 	BackslashLineBreak                            // Translate trailing backslashes into line breaks
 	DefinitionLists                               // Render definition lists
-	TOC                                           // Generate a table of contents
-	OmitContents                                  // Skip the main contents (for a standalone table of contents)
 
 	CommonHTMLFlags HTMLFlags = UseXHTML | Smartypants |
 		SmartypantsFractions | SmartypantsDashes | SmartypantsLatexDashes
@@ -290,8 +288,7 @@ type Options struct {
 func MarkdownBasic(input []byte) []byte {
 	// set up the HTML renderer
 	renderer := NewHTMLRenderer(HTMLRendererParameters{
-		Flags:      UseXHTML,
-		Extensions: CommonExtensions,
+		Flags: UseXHTML,
 	})
 
 	// set up the parser
@@ -319,8 +316,7 @@ func MarkdownBasic(input []byte) []byte {
 func MarkdownCommon(input []byte) []byte {
 	// set up the HTML renderer
 	renderer := NewHTMLRenderer(HTMLRendererParameters{
-		Flags:      CommonHTMLFlags,
-		Extensions: CommonExtensions,
+		Flags: CommonHTMLFlags,
 	})
 	return Markdown(input, renderer, DefaultOptions)
 }