diff --git a/harambe/observer.py b/harambe/observer.py
index 4ed6d72..7b13845 100644
--- a/harambe/observer.py
+++ b/harambe/observer.py
@@ -157,7 +157,7 @@ def _add_data(self, data: Any) -> bool:
         hash_value = self.compute_hash(data)
         if hash_value in self._saved_data:
             self.previously_saved_rows_on_page += 1
-            return True # return True if data is duplicated
+            return True  # return True if data is duplicated
         else:
             self._saved_data.add(hash_value)
             return False