diff --git a/Classes/ViewHelpers/FormatUrisViewHelper.php b/Classes/ViewHelpers/FormatUrisViewHelper.php
index 6ccb418..7c9d61a 100644
--- a/Classes/ViewHelpers/FormatUrisViewHelper.php
+++ b/Classes/ViewHelpers/FormatUrisViewHelper.php
@@ -107,7 +107,7 @@ public function compile($argumentsName, $closureName, &$initializationPhpCode, V
 
         return sprintf(
             'preg_replace(\'%1$s\', \'<a href="$0" target="_blank" rel="noopener noreferrer">$0</a>\', %2$s)',
-            str_replace('\'', '\\', self::$uriPattern),
+            str_replace("'", "\\'", self::$uriPattern),
             $valueVariableName
         );
     }