diff --git a/src/system/startup.cpp b/src/system/startup.cpp
index bbe4b03..de6514d 100644
--- a/src/system/startup.cpp
+++ b/src/system/startup.cpp
@@ -51,7 +51,9 @@ void startALPAKA(void * arg)
 	sta::rtos::startupExtras(arg);
 
 	// Wake threads
+#ifdef STA_RTOS_SYSTEM_EVENTS_ENABLE
 	sta::rtos::signalStartupEvent();
+#endif // STA_RTOS_SYSTEM_EVENTS_ENABLE
 
 	// Check if called from thread
 	if (osThreadGetId() != nullptr)