diff --git a/src/mainboard/siemens/mc_apl1/mainboard.c b/src/mainboard/siemens/mc_apl1/mainboard.c
index 07d0fb1..b39b681 100644
--- a/src/mainboard/siemens/mc_apl1/mainboard.c
+++ b/src/mainboard/siemens/mc_apl1/mainboard.c
@@ -15,6 +15,7 @@
  */
 
 #include <console/console.h>
+#include <device/mmio.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ops.h>