diff --git a/pomodoro_to_harvest.py b/pomodoro_to_harvest.py
index 03a03e6..6d895be 100644
--- a/pomodoro_to_harvest.py
+++ b/pomodoro_to_harvest.py
@@ -43,7 +43,7 @@ timelog['description'] = timelog['description'].str.strip()
 timelog['tmp_multiplier'] = (np.where(timelog['description'].str.contains('\*\s*\d$'), timelog['description'].str.rsplit('*', 1).str[1].str.strip(), 1))
 timelog['description'] = (np.where(timelog['description'].str.contains('\*\s*\d$'), timelog['description'].str.rsplit('*', 1).str[0], timelog['description']))
 timelog["time"] = timelog["time"] * timelog['tmp_multiplier'].astype(int)
-timelog['tmp_multiplier'].drop()
+timelog.drop(columns=['tmp_multiplier'], inplace=True)
 
 # Clean up description again, after it has been sliced and diced.
 timelog['description'] = timelog['description'].str.strip()