diff --git a/pomodoro_to_harvest.py b/pomodoro_to_harvest.py
index 553abdc..327c928 100644
--- a/pomodoro_to_harvest.py
+++ b/pomodoro_to_harvest.py
@@ -6,7 +6,7 @@ import sys
 # Import our local settings management.
 import settings
 
-if not hasattr(sys, 'ps1'):
+if hasattr(sys, 'ps1'):
     import copy
     debug = True
 else: