diff --git a/src/app/ui/editor/select_box_state.h b/src/app/ui/editor/select_box_state.h
index b570907b0..bcb5de186 100644
--- a/src/app/ui/editor/select_box_state.h
+++ b/src/app/ui/editor/select_box_state.h
@@ -15,6 +15,7 @@
 #include "ui/mouse_buttons.h"
 
 #include <vector>
+#include <string>
 
 namespace app {