diff --git a/app/vmalert/README.md b/app/vmalert/README.md
index 0de72579a0..8184abdb3f 100644
--- a/app/vmalert/README.md
+++ b/app/vmalert/README.md
@@ -1127,7 +1127,7 @@ The shortlist of configuration flags is the following:
   -notifier.bearerTokenFile array
      Optional path to bearer token file for -notifier.url
      Supports an array of values separated by comma or specified via multiple flags.
-  -notifier.blackhole -notifier.url
+  -notifier.blackhole bool
      Whether to blackhole alerting notifications. Enable this flag if you want vmalert to evaluate alerting rules without sending any notifications to external receivers (eg. alertmanager). -notifier.url, `-notifier.config` and `-notifier.blackhole` are mutually exclusive.
   -notifier.config string
      Path to configuration file for notifiers
diff --git a/docs/vmalert.md b/docs/vmalert.md
index 63c3916418..d5dd7d7cd7 100644
--- a/docs/vmalert.md
+++ b/docs/vmalert.md
@@ -1138,7 +1138,7 @@ The shortlist of configuration flags is the following:
   -notifier.bearerTokenFile array
      Optional path to bearer token file for -notifier.url
      Supports an array of values separated by comma or specified via multiple flags.
-  -notifier.blackhole -notifier.url
+  -notifier.blackhole bool
      Whether to blackhole alerting notifications. Enable this flag if you want vmalert to evaluate alerting rules without sending any notifications to external receivers (eg. alertmanager). -notifier.url, `-notifier.config` and `-notifier.blackhole` are mutually exclusive.
   -notifier.config string
      Path to configuration file for notifiers