diff --git a/src/gtk/notebook.cpp b/src/gtk/notebook.cpp
index 4439cbae46..0621f9fe5b 100644
--- a/src/gtk/notebook.cpp
+++ b/src/gtk/notebook.cpp
@@ -20,6 +20,7 @@
 #include "wx/imaglist.h"
 #include "wx/intl.h"
 #include "wx/log.h"
+#include "wx/bitmap.h"
 
 #include "wx/gtk/private.h"
 #include "wx/gtk/win_gtk.h"
diff --git a/src/gtk1/notebook.cpp b/src/gtk1/notebook.cpp
index 4439cbae46..0621f9fe5b 100644
--- a/src/gtk1/notebook.cpp
+++ b/src/gtk1/notebook.cpp
@@ -20,6 +20,7 @@
 #include "wx/imaglist.h"
 #include "wx/intl.h"
 #include "wx/log.h"
+#include "wx/bitmap.h"
 
 #include "wx/gtk/private.h"
 #include "wx/gtk/win_gtk.h"