diff --git a/loopy/target/pyopencl_execution.py b/loopy/target/pyopencl_execution.py
index 2da25ba39ceef38a4af105913973226bd3773729..d059add0935ffe3020eda6d68014289c7a96313b 100644
--- a/loopy/target/pyopencl_execution.py
+++ b/loopy/target/pyopencl_execution.py
@@ -642,7 +642,9 @@ class PyOpenCLKernelExecutor(KernelExecutorBase):
 
         from loopy.target.pyopencl import PyOpenCLTarget
         if isinstance(kernel.target, PyOpenCLTarget):
-            self.kernel = kernel.copy(target=PyOpenCLTarget(context.devices[0]))
+            self.kernel = kernel.copy(
+                    target=PyOpenCLTarget(context.devices[0]),
+                    uniquify_instruction_ids=False)
 
     @memoize_method
     def cl_kernel_info(self, arg_to_dtype_set=frozenset(), all_kwargs=None):