1 files changed, 3 insertions, 1 deletions
diff --git a/src/joystick.h b/src/joystick.h
index 55b75d373..740fa7cbd 100644
--- a/src/joystick.h
+++ b/src/joystick.h
@@ -121,10 +121,12 @@ class Joystick
 
         KeysVector *getActionVector(const SDL_Event &event);
 
-        int getButtonFromEvent(const SDL_Event &event);
+        int getButtonFromEvent(const SDL_Event &event) const;
 
         bool isActionActive(int index) const;
 
+        bool validate() const;
+
     protected:
         unsigned char mDirection;