diff --git a/arch/sim/src/sim/win/sim_hosttime.c b/arch/sim/src/sim/win/sim_hosttime.c
index 1f0bbc9c8f47f..3a88b98a6000d 100644
--- a/arch/sim/src/sim/win/sim_hosttime.c
+++ b/arch/sim/src/sim/win/sim_hosttime.c
@@ -150,6 +150,22 @@ int host_settimer(uint64_t nsec)
   return -ENOSYS;
 }
 
+/****************************************************************************
+ * Name: host_set_timeratio
+ *
+ * Description:
+ *   Set the ratio of simulated time to real time in percent.
+ *   Not implemented on Windows.
+ *
+ * Input Parameters:
+ *   ratio - The new time ratio in percent
+ *
+ ****************************************************************************/
+
+void host_set_timeratio(int ratio)
+{
+}
+
 /****************************************************************************
  * Name: host_timerirq
  *