diff --git a/README.md b/README.md
index 9846502..8636bac 100644
--- a/README.md
+++ b/README.md
@@ -100,7 +100,7 @@ if __name__ == '__main__':
     df1 = pd.read_csv('ohlc.csv')
     
     # Columns: time | price 
-    df2 = pd.read_csv('ticks.csv')
+    df2 = pd.read_csv('ticks.csv', parse_dates=['time'])
     
     chart = Chart()
     
diff --git a/examples/3_tick_data/tick_data.py b/examples/3_tick_data/tick_data.py
index 5d3217d..3337b65 100644
--- a/examples/3_tick_data/tick_data.py
+++ b/examples/3_tick_data/tick_data.py
@@ -7,7 +7,7 @@ if __name__ == '__main__':
     df1 = pd.read_csv('ohlc.csv')
 
     # Columns: time | price
-    df2 = pd.read_csv('ticks.csv')
+    df2 = pd.read_csv('ticks.csv', parse_dates=['time'])
 
     chart = Chart()
 
diff --git a/lightweight_charts/polygon.py b/lightweight_charts/polygon.py
index af134eb..623f51e 100644
--- a/lightweight_charts/polygon.py
+++ b/lightweight_charts/polygon.py
@@ -406,7 +406,7 @@ class PolygonChart(Chart):
             on_top: bool = False, maximize: bool = False, debug: bool = False,
             title: str = '', screen: int = None,
     ):
-        super().__init__(width, height, x, y, title,screen,on_top, maximize, debug, toolbox)
+        super().__init__(width, height, x, y, title, screen, on_top, maximize, debug, toolbox)
 
         self.num_bars = num_bars
         self.end_date = end_date