diff --git a/headers/private/system/arch/riscv64/arch_config.h b/headers/private/system/arch/riscv64/arch_config.h
index 1be83d9386..6e22c47143 100644
--- a/headers/private/system/arch/riscv64/arch_config.h
+++ b/headers/private/system/arch/riscv64/arch_config.h
@@ -12,7 +12,7 @@
 #define STACK_GROWS_DOWNWARDS
 
 //#define ATOMIC_FUNCS_ARE_SYSCALLS
-#define ATOMIC64_FUNCS_ARE_SYSCALLS
+//#define ATOMIC64_FUNCS_ARE_SYSCALLS
 
 
 #endif	/* _SYSTEM_ARCH_RISCV64_CONFIG_H */