diff --git a/init/main.c b/init/main.c
index f06fbe79a84af364e6a79320697f6bae155c1a30..2b466bd041104f56047fdb96107f55633c8470e5 100644
--- a/init/main.c
+++ b/init/main.c
@@ -631,6 +631,8 @@ 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);