diff --git a/src/ingest_validation_tests/fastq_validator_logic.py b/src/ingest_validation_tests/fastq_validator_logic.py
index a7cebce..baf8e45 100644
--- a/src/ingest_validation_tests/fastq_validator_logic.py
+++ b/src/ingest_validation_tests/fastq_validator_logic.py
@@ -123,9 +123,9 @@ def _validate_fastq_line_4(self, line: str) -> List[str]:
     def validate_fastq_record(self, line: str, line_number: int) -> List[str]:
         line_index = line_number % 4 + 1
 
-        validator_method: Callable[
-            [FASTQValidatorLogic, str], List[str]
-        ] = self._VALIDATE_FASTQ_LINE_METHODS[line_index]
+        validator_method: Callable[[FASTQValidatorLogic, str], List[str]] = (
+            self._VALIDATE_FASTQ_LINE_METHODS[line_index]
+        )
 
         assert validator_method, f"No validator method defined for record index {line_index}"