diff --git a/src/Output/QRMarkup.php b/src/Output/QRMarkup.php
index fc7856c8e..8a090e9d5 100644
--- a/src/Output/QRMarkup.php
+++ b/src/Output/QRMarkup.php
@@ -82,7 +82,9 @@ abstract class QRMarkup extends QROutputAbstract{
 	/**
 	 * returns a string with all css classes for the current element
 	 */
-	abstract protected function getCssClass(int $M_TYPE):string;
+	protected function getCssClass(int $M_TYPE):string{
+		return $this->options->cssClass;
+	}
 
 	/**
 	 *
diff --git a/src/Output/QRMarkupHTML.php b/src/Output/QRMarkupHTML.php
index 1e4158ffa..194378fc2 100644
--- a/src/Output/QRMarkupHTML.php
+++ b/src/Output/QRMarkupHTML.php
@@ -50,11 +50,4 @@ class QRMarkupHTML extends QRMarkup{
 		return $html;
 	}
 
-	/**
-	 * @inheritDoc
-	 */
-	protected function getCssClass(int $M_TYPE):string{
-		return $this->options->cssClass;
-	}
-
 }