diff --git a/Core/Inc/canlog.h b/Core/Inc/canlog.h
index f95a9ff..0ba9cb4 100644
--- a/Core/Inc/canlog.h
+++ b/Core/Inc/canlog.h
@@ -23,6 +23,7 @@
 #define CANLOG_H
 
 #include "main.h"
+#include "cmsis_os.h"
 
 extern osMessageQueueId_t xCAN1RxQueue;
 extern osMessageQueueId_t xCAN2RxQueue;