diff --git a/bwi_mapper/src/nodes/prepare_graph.cpp b/bwi_mapper/src/nodes/prepare_graph.cpp
index 883254bd..5bdae03a 100755
--- a/bwi_mapper/src/nodes/prepare_graph.cpp
+++ b/bwi_mapper/src/nodes/prepare_graph.cpp
@@ -142,7 +142,7 @@ int main(int argc, char** argv) {
   mapper.drawMap(image);
   drawElementsFile(argv[3], image, graph, info);
 
-  cv::namedWindow("Display window", cv::WINDOW_AUTOSIZE);
+  cv::namedWindow("Display window", CV_WINDOW_AUTOSIZE);
   cv::imshow("Display window", image);                
   cv::imwrite("out.png", image);