diff --git a/README.md b/README.md
index 9df893b..c96a764 100644
--- a/README.md
+++ b/README.md
@@ -99,6 +99,6 @@ $ python polyline_to_points.py path/to/shp
 # Extract points at 5m increments
 $ python polyline_to_points.py -s 5 path/to/shp
 
-# Use profile names from field "ProfileID" in the attribute table
-$ python polyline_to_points.py -f ProfileID path/to/shp
+# Use profile names from field "ProfileID" in the attribute table at 1 m spacing
+$ python polyline_to_points.py -f -s 1 ProfileID path/to/shp
 ```