diff --git a/README.md b/README.md
index ef4061e11d7..5056aa90159 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ comprehensive documentation, visit:
 
 ### Basic steps:
   
-1. Install OpenJDK 17 (or greater).
+1. Install OpenJDK 17 (exactly this version).
 2. Clone Lucene's git repository (or download the source distribution).
 3. Run gradle launcher script (`gradlew`).