diff --git a/linux-user/user-internals.h b/linux-user/user-internals.h
index f71f372829..a8fdd6933b 100644
--- a/linux-user/user-internals.h
+++ b/linux-user/user-internals.h
@@ -64,7 +64,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
                     abi_long arg5, abi_long arg6, abi_long arg7,
                     abi_long arg8);
 extern __thread CPUState *thread_cpu;
-void cpu_loop(CPUArchState *env);
+void QEMU_NORETURN cpu_loop(CPUArchState *env);
 const char *target_strerror(int err);
 int get_osversion(void);
 void init_qemu_uname_release(void);