diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60e68edbfffbf..6055b55f83738 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -120,6 +120,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
- Add support of special WrappingSearchAsyncActionPhase so the onPhaseStart() will always be followed by onPhaseEnd() within AbstractSearchAsyncAction ([#12293](https://github.com/opensearch-project/OpenSearch/pull/12293))
- Add a system property to configure YamlParser codepoint limits ([#12298](https://github.com/opensearch-project/OpenSearch/pull/12298))
- Prevent read beyond slice boundary in ByteArrayIndexInput ([#10481](https://github.com/opensearch-project/OpenSearch/issues/10481))
+- Fix the "highlight.max_analyzer_offset" request parameter with "plain" highlighter ([#10919](https://github.com/opensearch-project/OpenSearch/pull/10919))
### Security
diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/search.highlight/30_max_analyzed_offset.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/search.highlight/30_max_analyzed_offset.yml
index a18ac45e62175..4ee905972d106 100644
--- a/rest-api-spec/src/main/resources/rest-api-spec/test/search.highlight/30_max_analyzed_offset.yml
+++ b/rest-api-spec/src/main/resources/rest-api-spec/test/search.highlight/30_max_analyzed_offset.yml
@@ -78,3 +78,15 @@ setup:
index: test1
body: {"query" : {"match" : {"field2" : "fox"}}, "highlight" : {"type" : "plain", "fields" : {"field2" : {}}}}
- match: { error.root_cause.0.type: "illegal_argument_exception" }
+
+---
+"Plain highlighter on a field WITHOUT OFFSETS using max_analyzer_offset should SUCCEED":
+ - skip:
+ version: " - 2.1.99"
+ reason: only starting supporting the parameter max_analyzer_offset on version 2.2
+ - do:
+ search:
+ rest_total_hits_as_int: true
+ index: test1
+ body: {"query" : {"match" : {"field1" : "quick"}}, "highlight" : {"type" : "plain", "fields" : {"field1" : {"max_analyzer_offset": 10}}}}
+ - match: {hits.hits.0.highlight.field1.0: "The quick "}
diff --git a/server/src/main/java/org/opensearch/search/fetch/subphase/highlight/PlainHighlighter.java b/server/src/main/java/org/opensearch/search/fetch/subphase/highlight/PlainHighlighter.java
index eb5f4f3c14eb2..c06a733203434 100644
--- a/server/src/main/java/org/opensearch/search/fetch/subphase/highlight/PlainHighlighter.java
+++ b/server/src/main/java/org/opensearch/search/fetch/subphase/highlight/PlainHighlighter.java
@@ -123,13 +123,27 @@ public HighlightField highlight(FieldHighlightContext fieldContext) throws IOExc
List