diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index 156b62a..8a48cc2 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -226,7 +226,7 @@ static int load_xbc_from_initrd(int fd, char **buf)
 	/* Wrong Checksum */
 	rcsum = xbc_calc_checksum(*buf, size);
 	if (csum != rcsum) {
-		pr_err("checksum error: %d != %d\n", csum, rcsum);
+		pr_err("checksum error: %u != %u\n", csum, rcsum);
 		return -EINVAL;
 	}
 
@@ -395,7 +395,7 @@ static int apply_xbc(const char *path, const char *xbc_path)
 	xbc_get_info(&ret, NULL);
 	printf("\tNumber of nodes: %d\n", ret);
 	printf("\tSize: %u bytes\n", (unsigned int)size);
-	printf("\tChecksum: %d\n", (unsigned int)csum);
+	printf("\tChecksum: %u\n", (unsigned int)csum);
 
 	/* TODO: Check the options by schema */
 	xbc_exit();