diff --git a/unit/internal/multi_bit_compress.cpp b/unit/internal/multi_bit_compress.cpp
index 2d59ea14..40078f81 100644
--- a/unit/internal/multi_bit_compress.cpp
+++ b/unit/internal/multi_bit_compress.cpp
@@ -28,6 +28,8 @@
 
 #include "config.h"
 
+#include <memory>
+
 #include "gtest/gtest.h"
 #include "ue2common.h"
 #include "util/compile_error.h"