diff --git a/ChangeLog b/ChangeLog
index ead5a542..32291715 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2020-12-31  Jay Berkenbilt  <ejb@ql.org>
 
+	* QPDFPageObjectHelper::removeUnreferencedResources can now be
+	called with a QPDFPageObjectHelper created from a form XObject.
+	The method already recursed into form XObjects.
+
 	* Rename some QPDFPageObjectHelper methods and make them support
 	form XObjects as well as pages. The old names will be preserved
 	from compatibility.
diff --git a/include/qpdf/QPDFPageObjectHelper.hh b/include/qpdf/QPDFPageObjectHelper.hh
index d5ffe78b..b25de1fe 100644
--- a/include/qpdf/QPDFPageObjectHelper.hh
+++ b/include/qpdf/QPDFPageObjectHelper.hh
@@ -186,7 +186,8 @@ class QPDFPageObjectHelper: public QPDFObjectHelper
     // QPDFPageDocumentHelper::pushInheritedAttributesToPage(). This
     // method is used by page splitting code to avoid copying unused
     // objects in files that used shared resource dictionaries across
-    // multiple pages.
+    // multiple pages. This method recurses into form XObjects and can
+    // be called with a form XObject as well as a page.
     QPDF_DLL
     void removeUnreferencedResources();