diff --git a/libs/kiplatform/port/wxgtk/ui.cpp b/libs/kiplatform/port/wxgtk/ui.cpp
index fba47c7cb8..df958474d8 100644
--- a/libs/kiplatform/port/wxgtk/ui.cpp
+++ b/libs/kiplatform/port/wxgtk/ui.cpp
@@ -154,6 +154,12 @@ void KIPLATFORM::UI::ReparentModal( wxNonOwnedWindow* aWindow )
 }
 
 
+void KIPLATFORM::UI::ReparentWindow( wxNonOwnedWindow* aWindow, wxTopLevelWindow* aParent )
+{
+    // Not needed on this platform (only relevant for macOS child window ordering)
+}
+
+
 void KIPLATFORM::UI::FixupCancelButtonCmdKeyCollision( wxWindow *aWindow )
 {
     // Not needed on this platform
diff --git a/libs/kiplatform/port/wxmsw/ui.cpp b/libs/kiplatform/port/wxmsw/ui.cpp
index fbcc801ff0..40b1bf0420 100644
--- a/libs/kiplatform/port/wxmsw/ui.cpp
+++ b/libs/kiplatform/port/wxmsw/ui.cpp
@@ -88,6 +88,12 @@ void KIPLATFORM::UI::ReparentModal( wxNonOwnedWindow* aWindow )
 }
 
 
+void KIPLATFORM::UI::ReparentWindow( wxNonOwnedWindow* aWindow, wxTopLevelWindow* aParent )
+{
+    // Not needed on this platform (used only on macOS for child window ordering)
+}
+
+
 void KIPLATFORM::UI::FixupCancelButtonCmdKeyCollision( wxWindow *aWindow )
 {
     // Not needed on this platform