diff --git a/stagit.c b/stagit.c
index b3b644b..fc58c0c 100644
--- a/stagit.c
+++ b/stagit.c
@@ -628,7 +628,7 @@ writeblob(git_object *obj, const char *filename, git_off_t filesize)
writeheader(fp);
fputs("
", fp);
xmlencode(fp, filename, strlen(filename));
- fprintf(fp, " (%" PRIu32 "b)", filesize);
+ fprintf(fp, " (%jub)", filesize);
fputs("
", fp);
if (git_blob_is_binary((git_blob *)obj)) {
@@ -734,7 +734,7 @@ writefilestree(FILE *fp, git_tree *tree, const char *branch, const char *path)
fputs(".html\">", fp);
xmlencode(fp, filename, strlen(filename));
fputs("", fp);
- fprintf(fp, "%" PRIu32, filesize);
+ fprintf(fp, "%ju", filesize);
fputs(" | \n", fp);
writeblob(obj, filename, filesize);