1 files changed, 1 insertions, 1 deletions
diff --git a/tikzit/src/gtk/GraphInputHandler.h b/tikzit/src/gtk/GraphInputHandler.h
index caf1528..4dbe5ca 100644
--- a/tikzit/src/gtk/GraphInputHandler.h
+++ b/tikzit/src/gtk/GraphInputHandler.h
@@ -40,7 +40,7 @@ typedef enum {
     CanvasDragState
 } MouseState;
 
-@interface GraphInputHandler: NSObject {
+@interface GraphInputHandler: NSObject <InputDelegate> {
     GraphRenderer *renderer;
     InputMode      mode;
     MouseState     state;