diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index f45f16f..070151f 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -25,11 +25,12 @@
 for how to configure the integration with Prometheus.
 
 plugin.@PLUGIN@.excludeMetrics
-:   String used to exclude metrics from the report. It can be specified multiple times.
-    Parsed as regular expression. Note, ^ and $ are automatically added around the string.
+:   Regex pattern used to exclude metrics from the report. It can be specified multiple times.
+    Note that pattern matching is done on the whole metric name, not only on a part of it.
     By default no metric is excluded.
     For example, to exclude all cache metrics, use: `excludeMetrics = cache.*`
 
+
 [Back to @PLUGIN@ documentation index][index]
 
 [index]: index.html