diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 9e244836de..6452c64f71 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -54,6 +54,7 @@
             <directory suffix=".php">libraries/tcpdf</directory>
             <directory suffix=".php">libraries/bfShapeFiles</directory>
             <directory suffix=".php">libraries/php-gettext</directory>
+            <directory suffix=".inc">libraries/php-gettext</directory>
         </blacklist>
     </filter>
 </phpunit>