diff --git a/simulator/main.h b/simulator/main.h
index 68a586531f..f7de749f0c 100644
--- a/simulator/main.h
+++ b/simulator/main.h
@@ -5,4 +5,5 @@
 #include "datalogging.h"
 #include "eficonsole.h"
 #include "cli_registry.h"
+#include "chprintf.h"
 #endif