diff --git a/src/core/hle/service/nvdrv/core/nvmap.h b/src/core/hle/service/nvdrv/core/nvmap.h
index c4cf323b78..695138807f 100644
--- a/src/core/hle/service/nvdrv/core/nvmap.h
+++ b/src/core/hle/service/nvdrv/core/nvmap.h
@@ -12,6 +12,7 @@
 #include <memory>
 #include <mutex>
 #include <optional>
+#include <unordered_map>
 #include <ankerl/unordered_dense.h>
 #include <assert.h>