diff --git a/reference/reflection/reflectionfunctionabstract.xml b/reference/reflection/reflectionfunctionabstract.xml
index cb457193ac..aadaf46181 100644
--- a/reference/reflection/reflectionfunctionabstract.xml
+++ b/reference/reflection/reflectionfunctionabstract.xml
@@ -28,6 +28,7 @@
 <!-- {{{ Class synopsis -->
     <classsynopsisinfo>
      <ooclass>
+      <modifier>abstract</modifier>
       <classname>ReflectionFunctionAbstract</classname>
      </ooclass>