diff --git a/README.md b/README.md
index 55a5067..5c52ffb 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,10 @@ The fields are:
 
 * `base_url` --- base URL for build logs (mandatory for access from CI broker page)
 * `state` --- required, directory where per-run directories are stored
-* `log` --- required, file where native CI should write a log
+* `log` --- required, file where native CI should write the run log
+
+The run log is aimed at the developers of the contents of the
+repository, instead of the node operator.
 
 
 ## Exit codes