diff --git a/vega_query/visualisations/plots/amm.py b/vega_query/visualisations/plots/amm.py
index bbb14f4b..e02c8980 100644
--- a/vega_query/visualisations/plots/amm.py
+++ b/vega_query/visualisations/plots/amm.py
@@ -49,7 +49,9 @@ def create(
     # Default timestamps for getting data if required
     network_timestamp = service.api.data.get_vega_time()
     start_timestamp = (
-        market.market_timestamps.proposed if start_timestamp is None else start_timestamp
+        market.market_timestamps.proposed
+        if start_timestamp is None
+        else start_timestamp
     )
     end_timestamp = network_timestamp if end_timestamp is None else end_timestamp
 
diff --git a/vega_query/visualisations/plots/sla.py b/vega_query/visualisations/plots/sla.py
index 634b478d..39189423 100644
--- a/vega_query/visualisations/plots/sla.py
+++ b/vega_query/visualisations/plots/sla.py
@@ -52,7 +52,9 @@ def create(
     # Default timestamps for getting data if required
     network_timestamp = service.api.data.get_vega_time()
     start_timestamp = (
-        market.market_timestamps.proposed if start_timestamp is None else start_timestamp
+        market.market_timestamps.proposed
+        if start_timestamp is None
+        else start_timestamp
     )
     end_timestamp = network_timestamp if end_timestamp is None else end_timestamp