diff --git a/src/common/cmdline.cpp b/src/common/cmdline.cpp
index a8764a296f..9437f57147 100644
--- a/src/common/cmdline.cpp
+++ b/src/common/cmdline.cpp
@@ -41,6 +41,7 @@
 
 #include "wx/datetime.h"
 #include "wx/cmdline.h"
+#include "wx/app.h"
 
 // ----------------------------------------------------------------------------
 // private functions