diff --git a/modules/reg/samples/map_test.cpp b/modules/reg/samples/map_test.cpp
index ddd58ca7e..4ce4d4fe3 100644
--- a/modules/reg/samples/map_test.cpp
+++ b/modules/reg/samples/map_test.cpp
@@ -38,10 +38,12 @@
 #include <iostream>
 #define _USE_MATH_DEFINES
 #include <cmath>
+#include <opencv2/imgcodecs.hpp>
 #include <opencv2/highgui.hpp> // OpenCV window I/O
 #include <opencv2/imgproc.hpp> // OpenCV image transformations
 #include <opencv2/imgproc.hpp>
 #include <opencv2/imgproc/types_c.h>
+#include <opencv2/imgcodecs/imgcodecs_c.h>
 #include <opencv2/highgui/highgui_c.h>
 
 #ifdef COMPARE_FEATURES