diff --git a/tests/MoFilesTest.php b/tests/MoFilesTest.php
index 76ed2e4..cd92519 100644
--- a/tests/MoFilesTest.php
+++ b/tests/MoFilesTest.php
@@ -34,7 +34,7 @@ public function testMoFilePlurals($filename)
     {
         $parser = new PhpMyAdmin\MoTranslator\Translator($filename);
         $expected_2 = '%d sekundy';
-        if (strpos($filename, 'plurals.mo') !== false) {
+        if (strpos($filename, 'plurals.mo') !== false || strpos($filename, 'noheader.mo') !== false) {
             $expected_0 = '%d sekundy';
         } elseif (strpos($filename, 'invalid-formula.mo') !== false) {
             $expected_0 = '%d sekunda';
diff --git a/tests/data/noheader.mo b/tests/data/noheader.mo
new file mode 100644
index 0000000..599315c
Binary files /dev/null and b/tests/data/noheader.mo differ