diff --git a/plot_transmission_timeline.py b/plot_transmission_timeline.py
index a0f28a5..207a619 100755
--- a/plot_transmission_timeline.py
+++ b/plot_transmission_timeline.py
@@ -163,7 +163,7 @@ if __name__ == "__main__":
     cc_algo = cc_algo.upper()
     transmission_direction = transmission_df["direction"].iloc[0]
 
-    transmission_df = transmission_df.filter(["goodput", "datetime", "ack_rtt", "goodput_rolling"])
+    transmission_df = transmission_df.filter(["goodput", "datetime", "srtt", "goodput_rolling"])
 
     # read serial csv
     serial_df = pd.read_csv(args.serial_file)