diff --git a/radio/src/targets/simu/simpgmspace.cpp b/radio/src/targets/simu/simpgmspace.cpp
index a0dc3c5e7..c81f1c6fd 100644
--- a/radio/src/targets/simu/simpgmspace.cpp
+++ b/radio/src/targets/simu/simpgmspace.cpp
@@ -95,6 +95,10 @@ void lcdInit()
 {
 }
 
+void toplcdOff()
+{
+}
+
 void simuInit()
 {
   for (int i = 0; i <= 17; i++) {