diff --git a/src/mac/carbon/combobox.cpp b/src/mac/carbon/combobox.cpp
index 8ea92291e2..0aa01b1a2b 100644
--- a/src/mac/carbon/combobox.cpp
+++ b/src/mac/carbon/combobox.cpp
@@ -14,6 +14,7 @@
 #endif
 
 #include "wx/combobox.h"
+#include "wx/button.h"
 #include "wx/menu.h"
 #include "wx/mac/uma.h"
 
diff --git a/src/mac/combobox.cpp b/src/mac/combobox.cpp
index 8ea92291e2..0aa01b1a2b 100644
--- a/src/mac/combobox.cpp
+++ b/src/mac/combobox.cpp
@@ -14,6 +14,7 @@
 #endif
 
 #include "wx/combobox.h"
+#include "wx/button.h"
 #include "wx/menu.h"
 #include "wx/mac/uma.h"