diff --git a/CHANGELOG.md b/CHANGELOG.md
index 020fb5bda8b8b..c18ff830f84cc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -122,6 +122,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - [BUG] Fix java.lang.SecurityException in repository-gcs plugin ([#10642](https://github.com/opensearch-project/OpenSearch/pull/10642))
 - Add telemetry tracer/metric enable flag and integ test. ([#10395](https://github.com/opensearch-project/OpenSearch/pull/10395))
 - Add instrumentation for indexing in transport bulk action and transport shard bulk action. ([#10273](https://github.com/opensearch-project/OpenSearch/pull/10273))
+- [BUG] Disable sort optimization for HALF_FLOAT ([#10999](https://github.com/opensearch-project/OpenSearch/pull/10999))
 
 ### Deprecated
 
diff --git a/server/src/main/java/org/opensearch/index/fielddata/IndexNumericFieldData.java b/server/src/main/java/org/opensearch/index/fielddata/IndexNumericFieldData.java
index b4e90b8ab570a..6fc074fe0de95 100644
--- a/server/src/main/java/org/opensearch/index/fielddata/IndexNumericFieldData.java
+++ b/server/src/main/java/org/opensearch/index/fielddata/IndexNumericFieldData.java
@@ -242,7 +242,7 @@ private XFieldComparatorSource comparatorSource(
                 assert !targetNumericType.isFloatingPoint();
                 source = new IntValuesComparatorSource(this, missingValue, sortMode, nested);
         }
-        if (targetNumericType != getNumericType()) {
+        if (targetNumericType != getNumericType() || getNumericType() == NumericType.HALF_FLOAT) {
             source.disableSkipping(); // disable skipping logic for cast of sort field
         }
         return source;