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-rw-r--r--ice_validator/tests/utils/nested_iterables.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/ice_validator/tests/utils/nested_iterables.py b/ice_validator/tests/utils/nested_iterables.py
index a868e5a..51b19de 100644
--- a/ice_validator/tests/utils/nested_iterables.py
+++ b/ice_validator/tests/utils/nested_iterables.py
@@ -51,7 +51,7 @@ class ParameterCollector:
def __call__(self, _, value):
if isinstance(value, str):
self.params.add(value)
- elif isinstance(value, list) and len(value) >= 1:
+ elif isinstance(value, list) and len(value) >= 1 and isinstance(value[0], str):
self.params.add(value[0])