diff --git a/src/gui/compat/removed_api.cpp b/src/gui/compat/removed_api.cpp
index 659a27ecb6a..a642c33c428 100644
--- a/src/gui/compat/removed_api.cpp
+++ b/src/gui/compat/removed_api.cpp
@@ -7,6 +7,17 @@
 
 QT_USE_NAMESPACE
 
+#if QT_GUI_REMOVED_SINCE(6, 4)
+
+#include "qpagesize.h" // removed duplicate declaration of op==
+                       // (still caused an symbol on some platforms)
+
+// #include "qotherheader.h"
+// // implement removed functions from qotherheader.h
+// order sections alphabetically
+
+#endif // QT_GUI_REMOVED_SINCE(6, 4)
+
 #if QT_GUI_REMOVED_SINCE(6, 6)
 
 #include "qpixmapcache.h" // inlined API
diff --git a/src/gui/painting/qpagesize.h b/src/gui/painting/qpagesize.h
index b3629bb8d2c..221863aad7e 100644
--- a/src/gui/painting/qpagesize.h
+++ b/src/gui/painting/qpagesize.h
@@ -203,7 +203,9 @@ public:
 
     void swap(QPageSize &other) noexcept { d.swap(other.d); }
 
+#if QT_GUI_REMOVED_SINCE(6, 4)
     friend Q_GUI_EXPORT bool operator==(const QPageSize &lhs, const QPageSize &rhs);
+#endif
     bool isEquivalentTo(const QPageSize &other) const;
 
     bool isValid() const;