diff --git a/bundles/org.openhab.binding.logreader/README.md b/bundles/org.openhab.binding.logreader/README.md
index 9e142545841d9..b38f5853299a8 100644
--- a/bundles/org.openhab.binding.logreader/README.md
+++ b/bundles/org.openhab.binding.logreader/README.md
@@ -27,7 +27,8 @@ The `reader` Thing has the following configuration parameters:
 | `customPatterns`              | String  |   no     |                                  | Search patterns separated by \| character for custom events.                            |
 | `customBlacklistingPatterns`  | String  |   no     |                                  | Search patterns for blacklisting unwanted custom events separated by \| character.      |
 
-Search patterns follows Java regular expression syntax. See https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html.
+Search patterns follows [Java regular expression syntax](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/regex/Pattern.html).
+Be aware that search patterns are case sensitive.
 
 ## Channels