diff --git a/README.md b/README.md
index 6185627..1b22e4e 100644
--- a/README.md
+++ b/README.md
@@ -37,11 +37,16 @@ or if you have integration tests as well
 sbt clean coverage it:test
 ```
 
+This instruments standard build output so remember to clean again with coverage disabled before publishing your build to avoid including instrumentation.
+
 To enable coverage directly in your build, use:
 ```scala
 coverageEnabled := true
 ```
 
+Note that this will result in code being always instrumented which is unlikely what you want.
+
+
 To generate the coverage reports run
 ```
 sbt coverageReport