diff --git a/README.md b/README.md
index 10b97f9..40e850c 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ Various log levels are supported:
 | ERROR | 1 |
 | FATAL | 0 |
 
-The default logging level is INFO.
+The default logging level is INFO (i.e., if you do not explicitly set the `LOG_LEVEL` environment variable, the value `LOG_LEVEL=3` is assumed by default).
 
 Next we define a couple of HTTP resources and a cache: