diff --git a/pyopencl/tools.py b/pyopencl/tools.py
index 952302f3e715d1737cfa1af70a480497f7872f6a..6da2d17bd93418f8b91c08f201c39e8da4838f87 100644
--- a/pyopencl/tools.py
+++ b/pyopencl/tools.py
@@ -231,7 +231,7 @@ class Argument:
         self.name = name
 
     def __repr__(self):
-        return "%s(%r, %s, %d)" % (
+        return "%s(%r, %s)" % (
                 self.__class__.__name__,
                 self.name,
                 self.dtype)