diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 5c79942b335..9bb7d24bbdb 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -256,6 +256,9 @@ Bug Fixes
 * SOLR-8145: Fix position of OOM killer script when starting Solr in the background (Jurian Broertjes via
   Timothy Potter)
 
+* SOLR-8769: Fix document exclusion in mlt query parser in Cloud mode for schemas that have non-"id"
+  unique field (Erik Hatcher, Anshum Gupta)
+
 Optimizations
 ----------------------
 * SOLR-7876: Speed up queries and operations that use many terms when timeAllowed has not been
diff --git a/solr/core/src/java/org/apache/solr/search/mlt/CloudMLTQParser.java b/solr/core/src/java/org/apache/solr/search/mlt/CloudMLTQParser.java
index 114226fe302..f2ed8b973a0 100644
--- a/solr/core/src/java/org/apache/solr/search/mlt/CloudMLTQParser.java
+++ b/solr/core/src/java/org/apache/solr/search/mlt/CloudMLTQParser.java
@@ -163,7 +163,7 @@ public class CloudMLTQParser extends QParser {
       BooleanQuery.Builder realMLTQuery = new BooleanQuery.Builder();
       realMLTQuery.setDisableCoord(true);
       realMLTQuery.add(boostedMLTQuery, BooleanClause.Occur.MUST);
-      realMLTQuery.add(createIdQuery("id", id), BooleanClause.Occur.MUST_NOT);
+      realMLTQuery.add(createIdQuery(req.getSchema().getUniqueKeyField().getName(), id), BooleanClause.Occur.MUST_NOT);
 
       return realMLTQuery.build();
     } catch (IOException e) {