diff --git a/extension/_test/definition_list.txt b/extension/_test/definition_list.txt
index 2ddc3ea..a6c1c87 100644
--- a/extension/_test/definition_list.txt
+++ b/extension/_test/definition_list.txt
@@ -141,3 +141,16 @@ on two lines.</p>
 </dl>
 //= = = = = = = = = = = = = = = = = = = = = = = =//
 
+
+6: Definition lists indented with tabs
+//- - - - - - - - -//
+0
+:	```
+		0
+//- - - - - - - - -//
+<dl>
+<dt>0</dt>
+<dd><pre><code>	0</code></pre>
+</dd>
+</dl>
+//= = = = = = = = = = = = = = = = = = = = = = = =//
diff --git a/extension/definition_list.go b/extension/definition_list.go
index eb16dd0..d2f5fec 100644
--- a/extension/definition_list.go
+++ b/extension/definition_list.go
@@ -138,7 +138,7 @@ func (b *definitionDescriptionParser) Open(parent gast.Node, reader text.Reader,
 		para.Parent().RemoveChild(para.Parent(), para)
 	}
 	cpos, padding := util.IndentPosition(line[pos+1:], pos+1, list.Offset-pos-1)
-	reader.AdvanceAndSetPadding(cpos, padding)
+	reader.AdvanceAndSetPadding(cpos+1, padding)
 
 	return ast.NewDefinitionDescription(), parser.HasChildren
 }
diff --git a/parser/code_block.go b/parser/code_block.go
index 4b18639..10a6762 100644
--- a/parser/code_block.go
+++ b/parser/code_block.go
@@ -52,7 +52,7 @@ func (b *codeBlockParser) Continue(node ast.Node, reader text.Reader, pc Context
 
 	// if code block line starts with a tab, keep a tab as it is.
 	if segment.Padding != 0 {
-		preserveLeadingTabInCodeBlock(&segment, reader)
+		preserveLeadingTabInCodeBlock(&segment, reader, 0)
 	}
 
 	node.Lines().Append(segment)
@@ -84,11 +84,12 @@ func (b *codeBlockParser) CanAcceptIndentedLine() bool {
 	return true
 }
 
-func preserveLeadingTabInCodeBlock(segment *text.Segment, reader text.Reader) {
-	offsetWithPadding := reader.LineOffset()
+func preserveLeadingTabInCodeBlock(segment *text.Segment, reader text.Reader, indent int) {
+	offsetWithPadding := reader.LineOffset() + indent
 	sl, ss := reader.Position()
 	reader.SetPosition(sl, text.NewSegment(ss.Start-1, ss.Stop))
 	if offsetWithPadding == reader.LineOffset() {
+		println("here")
 		segment.Padding = 0
 		segment.Start--
 	}
diff --git a/parser/fcode_block.go b/parser/fcode_block.go
index 4801449..63c2fd4 100644
--- a/parser/fcode_block.go
+++ b/parser/fcode_block.go
@@ -71,9 +71,10 @@ func (b *fencedCodeBlockParser) Open(parent ast.Node, reader text.Reader, pc Con
 func (b *fencedCodeBlockParser) Continue(node ast.Node, reader text.Reader, pc Context) State {
 	line, segment := reader.PeekLine()
 	fdata := pc.Get(fencedCodeBlockInfoKey).(*fenceData)
+
 	// if code block line starts with a tab, keep a tab as it is.
 	if segment.Padding != 0 {
-		preserveLeadingTabInCodeBlock(&segment, reader)
+		preserveLeadingTabInCodeBlock(&segment, reader, fdata.indent)
 	}
 	w, pos := util.IndentWidth(line, reader.LineOffset())
 	if w < 4 {