diff --git a/pomodoro_to_harvest.py b/pomodoro_to_harvest.py
index 7c358d0..b4c5967 100644
--- a/pomodoro_to_harvest.py
+++ b/pomodoro_to_harvest.py
@@ -90,7 +90,7 @@ timelog['description'] = timelog['description'].str.strip()
 timelog['project'] = timelog['project'].str.strip()
 
 timelog['tmp_timeshift'] = timelog['description'].str.extract(r'^(\(.+)\)', expand=False)
-timelog['tmp_timeshift'] = timelog['tmp_timeshift'].str.strip().str.replace("(","")
+timelog['tmp_timeshift'] = timelog['tmp_timeshift'].str.strip().str.replace("(","", regex=False)
 # In an ideal world we would use https://github.com/bear/parsedatetime or similar and
 # even better figure out the right date for strings like "Monday" but eh this'll do.
 timeshift_days = {