diff --git a/README.md b/README.md
index 4dc83f11..3e81f342 100644
--- a/README.md
+++ b/README.md
@@ -103,7 +103,8 @@ Options:
                                   backlog.  [env var: GRANIAN_BACKLOG;
                                   default: 1024; x>=128]
                                   backlog.  [default: 1024; x>=128]
-  --log / --no-log                Enable logging  [default: (enabled)]
+  --log / --no-log                Enable logging  [env var:
+                                  GRANIAN_LOG_ENABLED; default: (enabled)]
   --log-level [critical|error|warning|warn|info|debug]
                                   Log level  [env var: GRANIAN_LOG_LEVEL;
                                   default: info]