diff --git a/src/SymptomHistogramByBatchcodeTableFactory.py b/src/SymptomHistogramByBatchcodeTableFactory.py
index de563b08d7f..b485c81ea46 100644
--- a/src/SymptomHistogramByBatchcodeTableFactory.py
+++ b/src/SymptomHistogramByBatchcodeTableFactory.py
@@ -2,7 +2,9 @@ class SymptomHistogramByBatchcodeTableFactory:
 
     @staticmethod
     def createSymptomHistogramByBatchcodeTable(symptomByBatchcodeTable):
-        return (symptomByBatchcodeTable
-            .groupby(symptomByBatchcodeTable.index.names)
-            ['SYMPTOM'].value_counts()
-            .to_frame(name = 'SYMPTOM_COUNT_BY_VAX_LOT'))
+        return (
+            symptomByBatchcodeTable
+                .groupby(symptomByBatchcodeTable.index.names)
+                ['SYMPTOM'].value_counts()
+                .to_frame(name = 'SYMPTOM_COUNT_BY_VAX_LOT')
+              )