diff --git a/src/soc/amd/common/block/include/amdblocks/acpimmio.h b/src/soc/amd/common/block/include/amdblocks/acpimmio.h
index 32da867137..59ab9e5f4f 100644
--- a/src/soc/amd/common/block/include/amdblocks/acpimmio.h
+++ b/src/soc/amd/common/block/include/amdblocks/acpimmio.h
@@ -18,6 +18,7 @@
 #ifndef __AMDBLOCKS_ACPIMMIO_H__
 #define __AMDBLOCKS_ACPIMMIO_H__
 
+#include <stdint.h>
 /* iomap.h must indicate if the device uses a block, optional if unused. */
 #include <soc/iomap.h>
 #ifndef SUPPORTS_ACPIMMIO_SMI_BASE