diff --git a/Classes/PHPExcel/Writer/HTML.php b/Classes/PHPExcel/Writer/HTML.php
index 3affa7e..ca45a6f 100644
--- a/Classes/PHPExcel/Writer/HTML.php
+++ b/Classes/PHPExcel/Writer/HTML.php
@@ -1019,13 +1019,13 @@ class PHPExcel_Writer_HTML extends PHPExcel_Writer_Abstract implements PHPExcel_
 		$html .= $this->_setMargins($pSheet);
 			
 		if (!$this->_useInlineCss) {
-			$gridlines = $pSheet->getShowGridLines() ? ' gridlines' : '';
+			$gridlines = $pSheet->getShowGridlines() ? ' gridlines' : '';
 			$html .= '	<table border="0" cellpadding="0" cellspacing="0" id="sheet' . $sheetIndex . '" class="sheet' . $sheetIndex . $gridlines . '">' . PHP_EOL;
 		} else {
 			$style = isset($this->_cssStyles['table']) ?
 				$this->_assembleCSS($this->_cssStyles['table']) : '';
 
-			if ($this->_isPdf && $pSheet->getShowGridLines()) {
+			if ($this->_isPdf && $pSheet->getShowGridlines()) {
 				$html .= '	<table border="1" cellpadding="1" id="sheet' . $sheetIndex . '" cellspacing="1" style="' . $style . '">' . PHP_EOL;
 			} else {
 				$html .= '	<table border="0" cellpadding="1" id="sheet' . $sheetIndex . '" cellspacing="0" style="' . $style . '">' . PHP_EOL;