diff --git a/src/mac/app.cpp b/src/mac/app.cpp
index 89b58a9c3e..864e760185 100644
--- a/src/mac/app.cpp
+++ b/src/mac/app.cpp
@@ -15,6 +15,7 @@
 
 #include "wx/window.h"
 #include "wx/frame.h"
+#include "wx/button.h"
 #include "wx/app.h"
 #include "wx/utils.h"
 #include "wx/gdicmn.h"
diff --git a/src/mac/carbon/app.cpp b/src/mac/carbon/app.cpp
index 89b58a9c3e..864e760185 100644
--- a/src/mac/carbon/app.cpp
+++ b/src/mac/carbon/app.cpp
@@ -15,6 +15,7 @@
 
 #include "wx/window.h"
 #include "wx/frame.h"
+#include "wx/button.h"
 #include "wx/app.h"
 #include "wx/utils.h"
 #include "wx/gdicmn.h"