diff --git a/libs/x-content/src/test/java/org/opensearch/common/xcontent/XContentParserTests.java b/libs/x-content/src/test/java/org/opensearch/common/xcontent/XContentParserTests.java
index 45f39086dc3b1..3d5aa36caf171 100644
--- a/libs/x-content/src/test/java/org/opensearch/common/xcontent/XContentParserTests.java
+++ b/libs/x-content/src/test/java/org/opensearch/common/xcontent/XContentParserTests.java
@@ -79,7 +79,8 @@ public class XContentParserTests extends OpenSearchTestCase {
         () -> randomAlphaOfLengthBetween(1, SmileXContent.DEFAULT_MAX_STRING_LEN / 10), /* limit to ~200Mb */
         /* YAML parser limitation */
         XContentType.YAML,
-        () -> randomRealisticUnicodeOfCodepointLengthBetween(1, YamlXContent.DEFAULT_CODEPOINT_LIMIT)
+        /* use 75% of the limit, difficult to get the exact size of the content right */
+        () -> randomRealisticUnicodeOfCodepointLengthBetween(1, (int) (YamlXContent.DEFAULT_CODEPOINT_LIMIT * 0.75))
     );
 
     private static final Map<XContentType, Supplier<String>> FIELD_NAME_GENERATORS = Map.of(