diff --git a/pomodoro_to_harvest.py b/pomodoro_to_harvest.py
index 0733e3e..15e698c 100644
--- a/pomodoro_to_harvest.py
+++ b/pomodoro_to_harvest.py
@@ -141,6 +141,11 @@ for preferred, alternatives in replacement_project_names.items():
     alternatives = [item.lower() for item in alternatives]
     timelog.loc[timelog.project.str.lower().isin(alternatives), "project"] = preferred
 
+# If a compound project was specified, break that out into a sub-project (in
+# Harvest, we use Task, which is really task type, for this.
+timelog['subproject'] = (np.where(timelog['project'].str.contains(': '), timelog['project'].str.split(': ', 1).str[1], None))
+timelog['project'] = (np.where(timelog['project'].str.contains(': '), timelog['description'].str.split(': ', 1).str[0], timelog['description']))
+
 # Condense duplicate entries by date, summing the minutes spent, and listing
 # the first started and last recorded times for each task.
 # The fillna is essential or we drop entries with blank ('None') projects.