diff --git a/headers/private/system/arch/ppc/arch_config.h b/headers/private/system/arch/ppc/arch_config.h
index 1c57d08987..205362d885 100644
--- a/headers/private/system/arch/ppc/arch_config.h
+++ b/headers/private/system/arch/ppc/arch_config.h
@@ -11,7 +11,7 @@
 #define STACK_GROWS_DOWNWARDS
 
 //#define ATOMIC_FUNCS_ARE_SYSCALLS
-#define ATOMIC64_FUNCS_ARE_SYSCALLS
+//#define ATOMIC64_FUNCS_ARE_SYSCALLS
 
 
 #endif	/* _KERNEL_ARCH_PPC_CONFIG_H */