BUG: Safeguard against wrong "scaling" passed

Proposed changes

Passing of wrong parameter caused unwanted behaviour due to the last elif in the function being False.

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[ ] Minor change (e.g., dependency bumps, broken links).
[x] Bugfix (non-breaking change which fixes an issue).
[ ] New feature (non-breaking change which adds functionality).
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected).
[ ] Testing (contribution related to testing of existing or new functionality).
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[ ] The documentation is up-to-date.
[ ] Static typing is included in the update.
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[ ] The update is covered by the test suite (including tests added in the PR).
[ ] If new skipped tests have been introduced in this PR, pytest was run with the --run-skipped flag.