diff --git a/libfdisk/src/gpt.c b/libfdisk/src/gpt.c
index ff435e3ea..eaa9f4803 100644
--- a/libfdisk/src/gpt.c
+++ b/libfdisk/src/gpt.c
@@ -2503,6 +2503,8 @@ int fdisk_gpt_set_npartitions(struct fdisk_context *cxt, unsigned long new)
 	gpt = self_label(cxt);
 
 	old = le32_to_cpu(gpt->pheader->npartition_entries);
+	if (old == new)
+		return 0;	/* do nothing, say nothing */
 
 	/* calculate the size (bytes) of the entries array */
 	new_size = new * le32_to_cpu(gpt->pheader->sizeof_partition_entry);
diff --git a/libfdisk/src/script.c b/libfdisk/src/script.c
index fd05bf703..75e1b52de 100644
--- a/libfdisk/src/script.c
+++ b/libfdisk/src/script.c
@@ -1346,10 +1346,15 @@ int fdisk_apply_script_headers(struct fdisk_context *cxt, struct fdisk_script *d
 		return rc;
 
 	str = fdisk_script_get_header(dp, "table-length");
-	if (str)
-		return fdisk_gpt_set_npartitions(cxt, strtoul(str, NULL, 0));
+	if (str) {
+		uintmax_t sz;
 
-	return 0;
+		rc = parse_size(str, &sz, NULL);
+		if (rc == 0)
+			rc = fdisk_gpt_set_npartitions(cxt, sz);
+	}
+
+	return rc;
 }
 
 /**