diff --git a/src/JensenShannonDistance2BarChartDescriptionColumnAdder.py b/src/JensenShannonDistance2BarChartDescriptionColumnAdder.py
index 31b0426ed93..8200b382d02 100644
--- a/src/JensenShannonDistance2BarChartDescriptionColumnAdder.py
+++ b/src/JensenShannonDistance2BarChartDescriptionColumnAdder.py
@@ -17,5 +17,5 @@ class JensenShannonDistance2BarChartDescriptionColumnAdder:
             'Jensen-Shannon distance': distance.jensenshannon(
                 barChartDescription['Adverse Reaction Reports guessed'],
                 barChartDescription['Adverse Reaction Reports known'],
-                base=2.0)
+                base = 2.0)
         }