diff --git a/include/TLD.h b/include/TLD.h
index 2e94e687..d3909c32 100644
--- a/include/TLD.h
+++ b/include/TLD.h
@@ -1,4 +1,5 @@
 #include <opencv2/opencv.hpp>
+#include <opencv2/legacy/legacy.hpp>
 #include <tld_utils.h>
 #include <LKTracker.h>
 #include <FerNNClassifier.h>