diff --git a/htdocs/core/class/dolgraph.class.php b/htdocs/core/class/dolgraph.class.php
index d7850871ee0..8bf7b471473 100644
--- a/htdocs/core/class/dolgraph.class.php
+++ b/htdocs/core/class/dolgraph.class.php
@@ -944,7 +944,7 @@ class DolGraph
 		$tag=dol_escape_htmltag(dol_string_unaccent(dol_string_nospecial(basename($file), '_', array('-','.'))));
 
 		$this->stringtoshow ='<!-- Build using '.$this->_library.' -->'."\n";
-		if (! empty($this->title)) $this->stringtoshow.='<div class="center" class="dolgraphtitle'.(empty($this->cssprefix)?'':' dolgraphtitle'.$this->cssprefix).'">'.$this->title.'</div>';
+		if (! empty($this->title)) $this->stringtoshow.='<div class="center dolgraphtitle'.(empty($this->cssprefix)?'':' dolgraphtitle'.$this->cssprefix).'">'.$this->title.'</div>';
 		if (! empty($this->shownographyet))
 		{
 		  $this->stringtoshow.='<div style="width:'.$this->width.'px;height:'.$this->height.'px;" class="nographyet"></div>';