diff --git a/src/frontend/gui/GUI.h b/src/frontend/gui/GUI.h
index c8be27ff..b17af47f 100644
--- a/src/frontend/gui/GUI.h
+++ b/src/frontend/gui/GUI.h
@@ -3,6 +3,7 @@
 
 #include <memory>
 #include <vector>
+#include <string>
 #include <glm/glm.hpp>
 #include <functional>
 #include <unordered_map>