diff --git a/README.md b/README.md
index 43b0aef..3ec2932 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ This plugin will generate code coverage reports using Cobertura.
 
 ## To run:
 
-    grails test-app
+    grails test-app -coverage
 
 
 ## Command line options: