diff --git a/api/onnx_web/params.py b/api/onnx_web/params.py
index 76a41933..ddfdf4ac 100644
--- a/api/onnx_web/params.py
+++ b/api/onnx_web/params.py
@@ -38,7 +38,7 @@ class Border:
         self.bottom = bottom
 
     def __str__(self) -> str:
-        return "(%s, %s, %s, %s)" % (self.left, self.top, self.right, self.bottom)
+        return "(%s, %s, %s, %s)" % (self.left, self.right, self.top, self.bottom)
 
     def tojson(self):
         return {