diff --git a/src/PhpPresentation/Writer/PowerPoint2007/AbstractDecoratorWriter.php b/src/PhpPresentation/Writer/PowerPoint2007/AbstractDecoratorWriter.php
index 362d94193..bf4b0b7e8 100644
--- a/src/PhpPresentation/Writer/PowerPoint2007/AbstractDecoratorWriter.php
+++ b/src/PhpPresentation/Writer/PowerPoint2007/AbstractDecoratorWriter.php
@@ -265,7 +265,7 @@ protected function writeOutline(XMLWriter $objWriter, ?Outline $oOutline): void
             return;
         }
         // Width : pts
-        $width = CommonDrawing::pointsToEmu($oOutline->getWidth());
+        $width = CommonDrawing::pixelsToEmu($oOutline->getWidth());
 
         // a:ln
         $objWriter->startElement('a:ln');