diff --git a/iree/turbine/aot/support/ir_utils.py b/iree/turbine/aot/support/ir_utils.py
index 4a402691..288ef323 100644
--- a/iree/turbine/aot/support/ir_utils.py
+++ b/iree/turbine/aot/support/ir_utils.py
@@ -295,7 +295,7 @@ def create_tensor_global(
                         f"#hal.device.promise<@__device_{device.ordinal}>"
                     )
                 else:
-                    queues = ", ".join(device.queues)
+                    queues = ', '.join(device.queues)
                     ir_attrs["iree.abi.affinity"] = Attribute.parse(
                         f"#hal.device.promise<@__device_{device.ordinal}, [{queues}]>"
                     )