diff --git a/arraycontext/impl/pyopencl.py b/arraycontext/impl/pyopencl.py
index cf432eb0b72087cc089bf665d0c03dfb5a2925d7..0e16ee2a0afd93b42945ba2395f7060eabf47590 100644
--- a/arraycontext/impl/pyopencl.py
+++ b/arraycontext/impl/pyopencl.py
@@ -368,6 +368,7 @@ class PyOpenCLArrayContext(ArrayContext):
     def clone(self):
         return type(self)(self.queue, self.allocator, self._wait_event_queue_length)
 
+    @property
     def permits_inplace_modification(self):
         return True