diff --git a/src/stages/audio.py b/src/stages/audio.py
index 46b015c..99225fe 100644
--- a/src/stages/audio.py
+++ b/src/stages/audio.py
@@ -163,7 +163,7 @@ def _build_time_frames(self, df: pd.DataFrame):
         df["startTime"] = df["startTime"].astype(str).apply(lambda x: x.split(".")[0])
         df["endTime"] = df["endTime"].astype(str).apply(lambda x: x.split(".")[0])
         
-        df["startTime"] = pd.to_datetime(" ".join([df["startDate"].astype(str), df["startTime"]))
+        df["startTime"] = pd.to_datetime(" ".join([df["startDate"].astype(str), df["startTime"]]))
         df["endTime"] = pd.to_datetime(" ".join([df["startDate"].astype(str), df["endTime"]]))
 
         df["start_time"] = df.startTime - timedelta(seconds=margin)