diff --git a/apps/graph/graph/preimage_graph_controller.h b/apps/graph/graph/preimage_graph_controller.h
index 995b06b0a..b9a553e6a 100644
--- a/apps/graph/graph/preimage_graph_controller.h
+++ b/apps/graph/graph/preimage_graph_controller.h
@@ -1,4 +1,5 @@
 #include "calculation_graph_controller.h"
+#include <apps/i18n.h>
 
 namespace Graph {