diff --git a/lib/Ray/include/Drawables/Basic/Circle.hpp b/lib/Ray/include/Drawables/Basic/Circle.hpp
index 627f3a61..610b37c6 100644
--- a/lib/Ray/include/Drawables/Basic/Circle.hpp
+++ b/lib/Ray/include/Drawables/Basic/Circle.hpp
@@ -26,7 +26,7 @@ namespace Ray {
             int getRadius(void) const;
 
         private:
-            int radius;
+            int _radius;
     };
 };