diff --git a/dlls/gdi32/bitblt.c b/dlls/gdi32/bitblt.c
index f446e260b04..cff45be3eb8 100644
--- a/dlls/gdi32/bitblt.c
+++ b/dlls/gdi32/bitblt.c
@@ -18,6 +18,8 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include "config.h"
+
 #include <stdarg.h>
 
 #include <math.h>