diff --git a/modules/ts/src/gpu_test.cpp b/modules/ts/src/gpu_test.cpp
index 21d9ad9..a626b0b 100644
--- a/modules/ts/src/gpu_test.cpp
+++ b/modules/ts/src/gpu_test.cpp
@@ -42,6 +42,7 @@
 
 #include "opencv2/ts/gpu_test.hpp"
 #include <stdexcept>
+#include <functional>
 
 using namespace cv;
 using namespace cv::gpu;