Minor improvement [skip CI]
Minor improvement [skip CI]


Former-commit-id: a9e7756dfa2c0640a00aa9437245fa421832c7d0 [formerly 300620fb50da2e2a5b1e09073e97b3a1a2697570]
Former-commit-id: 1f2770b0028c6cfba2b26c1de036d616c29c88d8
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine