diff --git a/README.md b/README.md
index 9066a3f..5456312 100644
--- a/README.md
+++ b/README.md
@@ -94,15 +94,15 @@ optional arguments:
 
 ```
 ./download_maps.py --cached-maps-dir ./cache \
-    --output-map-name central_america
+    --output-map-name central_america \
     --map-list lists/pbf/central_america.txt
 
 ./download_maps.py --cached-maps-dir ./cache \
-    --output-map-name midwest
+    --output-map-name midwest \
     --map-list lists/pbf/midwest.txt
 
 ./download_maps.py --cached-maps-dir ./cache \
-    --output-map-name south_america
+    --output-map-name south_america \
     --map-list lists/pbf/south_america.txt
 ```