diff --git a/init/main.c b/init/main.c
index 21b65f18ba837c284125c1f6fc79a8544e8b51f9..31f01f92632959a1b969350919e134e56bc701fe 100644
--- a/init/main.c
+++ b/init/main.c
@@ -633,6 +633,8 @@ static void __init setup_command_line(char *command_line)
 	if (!saved_command_line)
 		panic("%s: Failed to allocate %zu bytes\n", __func__, len + ilen);
 
+	len = xlen + strlen(command_line) + 1;
+
 	static_command_line = memblock_alloc(len, SMP_CACHE_BYTES);
 	if (!static_command_line)
 		panic("%s: Failed to allocate %zu bytes\n", __func__, len);