diff --git a/phpdotnet/phd/Package/Generic/XHTML.php b/phpdotnet/phd/Package/Generic/XHTML.php
index e74fc254..57e99bc7 100644
--- a/phpdotnet/phd/Package/Generic/XHTML.php
+++ b/phpdotnet/phd/Package/Generic/XHTML.php
@@ -525,7 +525,7 @@ abstract class Package_Generic_XHTML extends Format_Abstract_XHTML {
     protected $isSectionChunk = array();
     protected $params = array();
 
-    private bool $classHasAttributes = false;
+    protected bool $classHasAttributes = false;
 
     public function __construct() {
         parent::__construct();
diff --git a/phpdotnet/phd/Package/PHP/XHTML.php b/phpdotnet/phd/Package/PHP/XHTML.php
index 912ef562..f0aebfed 100644
--- a/phpdotnet/phd/Package/PHP/XHTML.php
+++ b/phpdotnet/phd/Package/PHP/XHTML.php
@@ -413,6 +413,10 @@ public function format_methodsynopsis_type($open, $tag, $attrs) {
                     "intersection" => "&",
                 };
             }
+            if ($this->classHasAttributes) {
+                $this->classHasAttributes = false;
+                return "<br>";
+            }
         } else {
             if (
                 isset($attrs[Reader::XMLNS_DOCBOOK]["class"])
diff --git a/tests/package/generic/attribute_formatting_002.phpt b/tests/package/generic/attribute_formatting_002.phpt
index 44e0c909..4a9b0aac 100644
--- a/tests/package/generic/attribute_formatting_002.phpt
+++ b/tests/package/generic/attribute_formatting_002.phpt
@@ -150,4 +150,21 @@ Content:
   }</div>
  </div>
 
+ <div class="section">
+  <p class="para">9. Function with unknown attributes</p>
+  <div class="methodsynopsis dc-description">
+   <span class="attribute">#[\UnknownAttribute]</span>
+   <span class="attribute">#[\AnotherUnknownAttribute]</span>
+   <span class="type">void</span> <span class="methodname">function_name</span>)</div>
+
+ </div>
+
+ <div class="section">
+  <p class="para">10. Function with known attributes</p>
+  <div class="methodsynopsis dc-description"><span class="attribute"><a href="file.knownattribute.is.in.html">#[\KnownAttribute]</a> </span>
+   <span class="attribute"><a href="file.anotherknownattribute.is.in.html">#[\AnotherKnownAttribute]</a> </span>
+   <span class="type">void</span> <span class="methodname">function_name</span>)</div>
+
+ </div>
+
 </div>
diff --git a/tests/package/generic/data/attribute_formatting_002.xml b/tests/package/generic/data/attribute_formatting_002.xml
index 3f2d070d..18e666ba 100644
--- a/tests/package/generic/data/attribute_formatting_002.xml
+++ b/tests/package/generic/data/attribute_formatting_002.xml
@@ -119,4 +119,22 @@
   </classsynopsis>
  </section>
 
+ <section>
+  <para>9. Function with unknown attributes</para>
+  <methodsynopsis>
+   <modifier role="attribute">#[\UnknownAttribute]</modifier>
+   <modifier role="attribute">#[\AnotherUnknownAttribute]</modifier>
+   <type>void</type><methodname>function_name</methodname>
+  </methodsynopsis>
+ </section>
+
+ <section>
+  <para>10. Function with known attributes</para>
+  <methodsynopsis>
+   <modifier role="attribute">#[\KnownAttribute]</modifier>
+   <modifier role="attribute">#[\AnotherKnownAttribute]</modifier>
+   <type>void</type><methodname>function_name</methodname>
+  </methodsynopsis>
+ </section>
+
 </chapter>