diff --git a/README.md b/README.md
index 9817ebf39fc7c15551bf5c2b43a8b3e5f7c4361d..6f15d6d98f990753493d35e35a3f7077aa1a1ad6 100644
--- a/README.md
+++ b/README.md
@@ -15,9 +15,9 @@ Install
 -------
 
 * copy jar-file to /operational_shared/plugins/custom/
+* check API https://exlibrisgroup.github.io/Rosetta.dps-sdk-projects/current/javadoc/com/exlibris/dps/sdk/techmd/FormatValidationPlugin.html
 
 Configuration
 -------------
-
 You should double check the paths in the plugin configuration.