diff --git a/querydsl-mongodb/src/main/java/com/querydsl/mongodb/document/AbstractMongodbQuery.java b/querydsl-mongodb/src/main/java/com/querydsl/mongodb/document/AbstractMongodbQuery.java
index dd990beea..37fb636ab 100644
--- a/querydsl-mongodb/src/main/java/com/querydsl/mongodb/document/AbstractMongodbQuery.java
+++ b/querydsl-mongodb/src/main/java/com/querydsl/mongodb/document/AbstractMongodbQuery.java
@@ -219,15 +219,15 @@ public abstract class AbstractMongodbQuery<Q extends AbstractMongodbQuery<Q>> im
         this.readPreference = readPreference;
     }
 
-    QueryMixin<Q> getQueryMixin() {
+    protected QueryMixin<Q> getQueryMixin() {
         return queryMixin;
     }
 
-    MongodbDocumentSerializer getSerializer() {
+    protected MongodbDocumentSerializer getSerializer() {
         return serializer;
     }
 
-    ReadPreference getReadPreference() {
+    protected ReadPreference getReadPreference() {
         return readPreference;
     }