diff --git a/backend/src/controllers/PyramidController.h b/backend/src/controllers/PyramidController.h
index 93d22a3..410767b 100644
--- a/backend/src/controllers/PyramidController.h
+++ b/backend/src/controllers/PyramidController.h
@@ -57,8 +57,8 @@ public:
                          const std::string &y);
 
 private:
-    static const int DAILY_PIXEL_LIMIT = 1000;
-    static const int FACE_SIZE = 200;
+    static constexpr int DAILY_PIXEL_LIMIT = 1000;
+    static constexpr int FACE_SIZE = 200;
 
     bool isValidPixelPosition(int faceId, int x, int y);
     bool isValidColor(const std::string &color);