diff --git a/adb/mutex_list.h b/adb/mutex_list.h
index 79c48d8e7..b59c9f200 100644
--- a/adb/mutex_list.h
+++ b/adb/mutex_list.h
@@ -6,6 +6,7 @@
 #ifndef ADB_MUTEX
 #error ADB_MUTEX not defined when including this file
 #endif
+ADB_MUTEX(basename_lock)
 ADB_MUTEX(dirname_lock)
 ADB_MUTEX(socket_list_lock)
 ADB_MUTEX(transport_lock)