diff --git a/arch/sim/src/sim/posix/sim_x11eventloop.c b/arch/sim/src/sim/posix/sim_x11eventloop.c
index 5539293ddf2..15d8cd0ddcf 100644
--- a/arch/sim/src/sim/posix/sim_x11eventloop.c
+++ b/arch/sim/src/sim/posix/sim_x11eventloop.c
@@ -46,6 +46,7 @@ extern Display *g_display;
  * Name: sim_buttonmap
  ****************************************************************************/
 
+#ifdef CONFIG_SIM_TOUCHSCREEN
 static int sim_buttonmap(int state, int button)
 {
   int buttons = 0;
@@ -88,6 +89,7 @@ static int sim_buttonmap(int state, int button)
 
   return buttons;
 }
+#endif
 
 /****************************************************************************
  * Public Functions