diff --git a/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageInjector.h b/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageInjector.h
index b0ea260..e35feee 100644
--- a/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageInjector.h
+++ b/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageInjector.h
@@ -22,6 +22,7 @@
 #include <libprotocan/MessageDef.h>
 #include <utils/Mutex.h>
 
+#include <mutex>
 #include <queue>
 
 namespace android::hardware::automotive::protocan {