diff --git a/src/TagHeaderFormatter/MaxHeaderValueLengthFormatter.php b/src/TagHeaderFormatter/MaxHeaderValueLengthFormatter.php
index 6c0dedae..aab0eff9 100644
--- a/src/TagHeaderFormatter/MaxHeaderValueLengthFormatter.php
+++ b/src/TagHeaderFormatter/MaxHeaderValueLengthFormatter.php
@@ -53,7 +53,7 @@ public function __construct(TagHeaderFormatter $inner, $maxHeaderValueLength = 4
      */
     public function getTagsHeaderName()
     {
-        $this->inner->getTagsHeaderName();
+        return $this->inner->getTagsHeaderName();
     }
 
     /**
diff --git a/tests/Unit/TagHeaderFormatter/MaxHeaderValueLengthFormatterTest.php b/tests/Unit/TagHeaderFormatter/MaxHeaderValueLengthFormatterTest.php
index 9f3eccf1..6255f63a 100644
--- a/tests/Unit/TagHeaderFormatter/MaxHeaderValueLengthFormatterTest.php
+++ b/tests/Unit/TagHeaderFormatter/MaxHeaderValueLengthFormatterTest.php
@@ -18,6 +18,12 @@
 
 class MaxHeaderValueLengthFormatterTest extends TestCase
 {
+    public function testGetTagsHeaderName()
+    {
+        $formatter = $this->getFormatter(50);
+        $this->assertSame('X-Cache-Tags', $formatter->getTagsHeaderName());
+    }
+
     public function testNotTooLong()
     {
         $formatter = $this->getFormatter(50);