diff --git a/applications/calibration-multi/src/main.cpp b/applications/calibration-multi/src/main.cpp
index bf301728e32efc26e22667f934327b5a2affd921..485653282cc0760c12c499afe5b5de55832a7491 100644
--- a/applications/calibration-multi/src/main.cpp
+++ b/applications/calibration-multi/src/main.cpp
@@ -11,6 +11,7 @@
 
 #include <algorithm>
 #include <numeric>
+#include <fstream>
 
 #include "util.hpp"
 #include "multicalibrate.hpp"