diff --git a/lib/Diff/Renderer/Html/Array.php b/lib/Diff/Renderer/Html/Array.php
index 7113a174..a97e717e 100644
--- a/lib/Diff/Renderer/Html/Array.php
+++ b/lib/Diff/Renderer/Html/Array.php
@@ -174,7 +174,9 @@ private function getChangeExtent($fromLine, $toLine)
 	 */
 	private function formatLines($lines)
 	{
-		$lines = array_map(array($this, 'ExpandTabs'), $lines);
+		if ($this->options['tabSize'] !== false) {
+			$lines = array_map(array($this, 'ExpandTabs'), $lines);
+		}
 		$lines = array_map(array($this, 'HtmlSafe'), $lines);
 		foreach($lines as &$line) {
 			$line = preg_replace_callback('# ( +)|^ #', __CLASS__."::fixSpaces", $line);
@@ -222,4 +224,4 @@ private function htmlSafe($string)
 	{
 		return htmlspecialchars($string, ENT_NOQUOTES, 'UTF-8');
 	}
-}
\ No newline at end of file
+}