diff --git a/include/wx/cmdline.h b/include/wx/cmdline.h
index 498752cb47..b34d114225 100644
--- a/include/wx/cmdline.h
+++ b/include/wx/cmdline.h
@@ -18,11 +18,10 @@
 #endif
 
 #include "wx/defs.h"
+#include "wx/string.h"
 
 #if wxUSE_CMDLINE_PARSER
 
-#include "wx/string.h"
-
 class WXDLLEXPORT wxDateTime;
 
 // ----------------------------------------------------------------------------