Fix a typo in a decorator call.

[kellertuer]

This caused an error when sub_kwargs was not empty – and a hard to spot typo. We should probably include this in the next release as well.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.73%. Comparing base (7f84436) to head (8fadac6).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #367 +/- ## ======================================= Coverage 99.73% 99.73% ======================================= Files 73 73 Lines 6822 6822 ======================================= Hits 6804 6804 Misses 18 18 ```

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