1 files changed, 3 insertions, 1 deletions
diff --git a/src/mongo/db/query/planner_access_test.cpp b/src/mongo/db/query/planner_access_test.cpp
index d30544b43fa..52df32c871e 100644
--- a/src/mongo/db/query/planner_access_test.cpp
+++ b/src/mongo/db/query/planner_access_test.cpp
@@ -38,7 +38,9 @@ namespace mongo {
 namespace {
 
 BSONObj serializeMatcher(Matcher* matcher) {
-    return matcher->getMatchExpression()->serialize();
+    BSONObjBuilder builder;
+    matcher->getMatchExpression()->serialize(&builder);
+    return builder.obj();
 }
 
 TEST(PlannerAccessTest, PrepareForAccessPlanningSortsEqualNodesByTheirChildren) {