diff --git a/applications/gui/src/camera.cpp b/applications/gui/src/camera.cpp
index ff13ce9281ff7c85b0352abea6a9868ee34fcfb0..e8a0c80aa8cbe3e90619297a78d2fde7efa7e75b 100644
--- a/applications/gui/src/camera.cpp
+++ b/applications/gui/src/camera.cpp
@@ -3,6 +3,8 @@
 #include "screen.hpp"
 #include <nanogui/glutil.h>
 
+#include <fstream>
+
 #ifdef HAVE_OPENVR
 #include "vr.hpp"
 #endif