diff --git a/main.cc b/main.cc
index 4275bc1..8e88f23 100644
--- a/main.cc
+++ b/main.cc
@@ -28,6 +28,7 @@
 #include <base/strings/string_util.h>
 #include <base/strings/stringprintf.h>
 #include <brillo/flag_helper.h>
+#include <brillo/message_loops/base_message_loop.h>
 
 #include "update_engine/common/terminator.h"
 #include "update_engine/common/utils.h"