diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index 5a8f5a3..509fd58 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -390,5 +390,6 @@
 				       uintptr_t *dev_handle,
 				       uintptr_t *image_spec);
 void plat_fwu_set_images_source(const struct fwu_metadata *metadata);
+uint32_t plat_fwu_get_boot_idx(void);
 
 #endif /* PLATFORM_H */