diff --git a/init/main.c b/init/main.c
index 507c9fba03bb..1687b0167c4a 100644
--- a/init/main.c
+++ b/init/main.c
@@ -521,7 +521,7 @@ static void __init boot_cpu_init(void)
 	cpu_set(cpu, cpu_possible_map);
 }
 
-void __init __attribute__((weak)) smp_setup_processor_id(void)
+void __init __weak smp_setup_processor_id(void)
 {
 }