diff --git a/dlls/dxerr8/dxerr8.c b/dlls/dxerr8/dxerr8.c
index 9207ae2dcf3..69d24e65017 100644
--- a/dlls/dxerr8/dxerr8.c
+++ b/dlls/dxerr8/dxerr8.c
@@ -18,6 +18,9 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include "config.h"
+#include "wine/port.h"
+
 #include <stdarg.h>
 #include <stdio.h>
 
diff --git a/dlls/dxerr9/dxerr9.c b/dlls/dxerr9/dxerr9.c
index 63822d27b34..7939c9991e7 100644
--- a/dlls/dxerr9/dxerr9.c
+++ b/dlls/dxerr9/dxerr9.c
@@ -18,6 +18,9 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include "config.h"
+#include "wine/port.h"
+
 #include <stdarg.h>
 #include <stdio.h>