diff --git a/include/fwu_mdata.h b/include/fwu_mdata.h
index 8fda4f4ac2..56189e2f40 100644
--- a/include/fwu_mdata.h
+++ b/include/fwu_mdata.h
@@ -6,6 +6,7 @@
 #if !defined _FWU_MDATA_H_
 #define _FWU_MDATA_H_
 
+#include <linux/compiler_attributes.h>
 #include <efi.h>
 
 /**
@@ -22,7 +23,7 @@ struct fwu_image_bank_info {
 	efi_guid_t  image_uuid;
 	uint32_t accepted;
 	uint32_t reserved;
-};
+} __packed;
 
 /**
  * struct fwu_image_entry - information for a particular type of image
@@ -38,7 +39,7 @@ struct fwu_image_entry {
 	efi_guid_t image_type_uuid;
 	efi_guid_t location_uuid;
 	struct fwu_image_bank_info img_bank_info[CONFIG_FWU_NUM_BANKS];
-};
+} __packed;
 
 /**
  * struct fwu_mdata - FWU metadata structure for multi-bank updates
@@ -62,6 +63,6 @@ struct fwu_mdata {
 	uint32_t previous_active_index;
 
 	struct fwu_image_entry img_entry[CONFIG_FWU_NUM_IMAGES_PER_BANK];
-};
+} __packed;
 
 #endif /* _FWU_MDATA_H_ */