diff --git a/reference/reflection/versions.xml b/reference/reflection/versions.xml
index 5904400a0b..2eee256f3a 100644
--- a/reference/reflection/versions.xml
+++ b/reference/reflection/versions.xml
@@ -147,7 +147,7 @@
  <function name='reflectionclass::getconstants' from='PHP 5'/>
  <function name='reflectionclass::getconstant' from='PHP 5'/>
  <function name='reflectionclass::getinterfaces' from='PHP 5'/>
- <function name='reflectionclass::getinterfacenames' from='PHP 5'/>
+ <function name='reflectionclass::getinterfacenames' from='PHP 5 &gt;= 5.2.0'/>
  <function name='reflectionclass::isinterface' from='PHP 5'/>
  <function name='reflectionclass::isabstract' from='PHP 5'/>
  <function name='reflectionclass::isfinal' from='PHP 5'/>