diff --git a/include/wx/generic/clrpickerg.h b/include/wx/generic/clrpickerg.h
index 5ec73c7fe1..69f4a70e03 100644
--- a/include/wx/generic/clrpickerg.h
+++ b/include/wx/generic/clrpickerg.h
@@ -12,6 +12,8 @@
 #ifndef _WX_CLRPICKER_H_
 #define _WX_CLRPICKER_H_
 
+#include "wx/button.h"
+
 class WXDLLIMPEXP_CORE wxColourData;
 
 //-----------------------------------------------------------------------------
diff --git a/include/wx/generic/filepickerg.h b/include/wx/generic/filepickerg.h
index b4ddc900c9..accfe2d266 100644
--- a/include/wx/generic/filepickerg.h
+++ b/include/wx/generic/filepickerg.h
@@ -12,6 +12,7 @@
 #ifndef _WX_FILEDIRPICKER_H_
 #define _WX_FILEDIRPICKER_H_
 
+#include "wx/button.h"
 #include "wx/filename.h"
 #include "wx/filedlg.h"
 #include "wx/dirdlg.h"
diff --git a/include/wx/generic/fontpickerg.h b/include/wx/generic/fontpickerg.h
index 6127ff049b..a0ca64d3e5 100644
--- a/include/wx/generic/fontpickerg.h
+++ b/include/wx/generic/fontpickerg.h
@@ -12,6 +12,8 @@
 #ifndef _WX_FONTPICKER_H_
 #define _WX_FONTPICKER_H_
 
+#include "wx/button.h"
+
 class WXDLLIMPEXP_CORE wxFontData;
 
 //-----------------------------------------------------------------------------