diff --git a/sample/sample.cpp b/sample/sample.cpp
index cb0d8fb..aab29f9 100644
--- a/sample/sample.cpp
+++ b/sample/sample.cpp
@@ -2,6 +2,8 @@
 #include <vector>
 #include <iomanip>
 #include <chrono>
+#include <algorithm>
+#include <cstring>
 #include <getopt.h>
 #include "../CPPFImdlp.h"
 #include "../tests/ArffFiles.h"