diff --git a/radio/src/CMakeLists.txt b/radio/src/CMakeLists.txt
index 16fdcaa66..1e133b41f 100644
--- a/radio/src/CMakeLists.txt
+++ b/radio/src/CMakeLists.txt
@@ -33,6 +33,7 @@ option(AUTOSWITCH "Automatic switch detection in menus" ON)
 option(SEMIHOSTING "Enable debugger semihosting" OFF)
 option(JITTER_MEASURE "Enable ADC jitter measurement" OFF)
 option(WATCHDOG "Enable hardware Watchdog" ON)
+option(ASTERISK "Enable asterisk icon (test only firmware)" OFF)
 if(SDL_FOUND)
   option(SIMU_AUDIO "Enable simulator audio." ON)
 endif()
@@ -235,6 +236,10 @@ if(JITTER_MEASURE)
   add_definitions(-DJITTER_MEASURE)
 endif()
 
+if(ASTERISK)
+  add_definitions(-DASTERISK)
+endif()
+
 if(WATCHDOG)
   add_definitions(-DWATCHDOG)
 endif()
diff --git a/radio/src/opentx.h b/radio/src/opentx.h
index 383e20ae1..b8e551548 100644
--- a/radio/src/opentx.h
+++ b/radio/src/opentx.h
@@ -1392,7 +1392,7 @@ extern uint8_t latencyToggleSwitch;
 
 inline bool isAsteriskDisplayed()
 {
-#if defined(LOG_TELEMETRY) || !defined(WATCHDOG) || defined(DEBUG_LATENCY)
+#if defined(ASTERISK) || !defined(WATCHDOG) || defined(LOG_TELEMETRY) || defined(DEBUG_LATENCY)
   return true;
 #endif