diff --git a/src/input_common/gcadapter/gc_adapter.h b/src/input_common/gcadapter/gc_adapter.h
index 0ea6263ebd..b1c2a1958b 100644
--- a/src/input_common/gcadapter/gc_adapter.h
+++ b/src/input_common/gcadapter/gc_adapter.h
@@ -7,6 +7,7 @@
 #include <functional>
 #include <mutex>
 #include <thread>
+#include <unordered_map>
 #include <libusb.h>
 #include "common/common_types.h"
 #include "common/threadsafe_queue.h"