diff --git a/python/interactive.py b/python/interactive.py
index c8c359f0..a2f09edb 100644
--- a/python/interactive.py
+++ b/python/interactive.py
@@ -1,5 +1,5 @@
 # Pass this file to one of the Python script arguments (e.g. --pre-place interactive.py)
-# to drop to an command-line interactive Python session in the middle of place and route 
+# to drop to a command-line interactive Python session in the middle of place and route 
 
 import code
 print("Press Ctrl+D to finish interactive session")