diff --git a/aegisub/src/dialog_selected_choices.h b/aegisub/src/dialog_selected_choices.h
index c6e3bd3ff..8ff57945d 100644
--- a/aegisub/src/dialog_selected_choices.h
+++ b/aegisub/src/dialog_selected_choices.h
@@ -34,7 +34,11 @@
 /// @ingroup
 
 #ifndef AGI_PRE
+#include <wx/button.h>
 #include <wx/choicdlg.h>
+#include <wx/event.h>
+#include <wx/listbox.h>
+#include <wx/sizer.h>
 #endif
 
 /// @class SelectedChoicesDialog