diff --git a/compiler/circle-resizer/include/Shape.h b/compiler/circle-resizer/include/Shape.h
index 5b5d6debdba..91af8ec2da0 100644
--- a/compiler/circle-resizer/include/Shape.h
+++ b/compiler/circle-resizer/include/Shape.h
@@ -85,15 +85,15 @@ class Shape
    */
   bool operator==(const Shape &rhs) const;
 
-  /**
-   * @brief Print the shape in format [1, 2, 3].
-   */
-  friend std::ostream &operator<<(std::ostream &os, const Shape &shape);
-
 private:
   std::vector<Dim> _dims;
 };
 
+/**
+ * @brief Print the shape in format [1, 2, 3].
+ */
+std::ostream &operator<<(std::ostream &os, const Shape &shape);
+
 } // namespace circle_resizer
 
 #endif // __CIRCLE_RESIZER_SHAPE_H__