diff --git a/modules/indexing/src/test/java/org/apache/ignite/cache/query/IndexQueryInlineSizesTest.java b/modules/indexing/src/test/java/org/apache/ignite/cache/query/IndexQueryInlineSizesTest.java
index 31f4d01b27a0d..87fd7697a6047 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/cache/query/IndexQueryInlineSizesTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/cache/query/IndexQueryInlineSizesTest.java
@@ -185,7 +185,7 @@ private void check(BiFunction<Integer, Integer, IndexQuery<Integer, BinaryObject
         Random r = new Random();
 
         int low = r.nextInt(CNT / 2);
-        int high = low + r.nextInt(CNT / 2);
+        int high = low + r.nextInt(CNT / 2 - 1) + 1;
 
         IndexQuery<Integer, BinaryObject> qry = qryBld.apply(low, high);