diff --git a/lpdf.php b/lpdf.php
index 4f41b71..177e095 100644
--- a/lpdf.php
+++ b/lpdf.php
@@ -208,20 +208,20 @@ class lpdf
 		$lineheight=ceil($fontsize*1.2);
 
 		//this is to make sure if the name of the school goes onto two lines we handle it properly
-		$l=$this->addLabelText($tmpY,strtoupper(trim($to)));
+		$l=$this->addLabelText($tmpY,mb_strtoupper(trim($to)));
 		$tmpY+=($lineheight/72)*$l;
 		if($co)
 		{
-			$l=$this->addLabelText($tmpY,trim(strtoupper("C/O $co")));
+			$l=$this->addLabelText($tmpY,trim(mb_strtoupper("C/O $co")));
 			$tmpY+=($lineheight/72)*$l;
 		}
 		if($address[strlen($address)-1]==".") $address=substr($address,0,-1);
-		$l=$this->addLabelText($tmpY,strtoupper(trim($address)));
+		$l=$this->addLabelText($tmpY,mb_strtoupper(trim($address)));
 		$tmpY+=($lineheight/72)*$l;
 
 		if(strlen($postalcode)==6) $pc=substr($postalcode,0,3)." ".substr($postalcode,3,3); else $pc=$postalcode;
 
-		$this->addLabelText($tmpY,trim(strtoupper("$city $province  $pc")));
+		$this->addLabelText($tmpY,trim(mb_strtoupper("$city $province  $pc")));
 
 	}