1 files changed, 3 insertions, 4 deletions
diff --git a/src/mongo/db/exec/exclusion_projection_executor.cpp b/src/mongo/db/exec/exclusion_projection_executor.cpp
index 2061bf4fe93..9823ed1b125 100644
--- a/src/mongo/db/exec/exclusion_projection_executor.cpp
+++ b/src/mongo/db/exec/exclusion_projection_executor.cpp
@@ -38,15 +38,14 @@ std::pair<BSONObj, bool> ExclusionNode::extractProjectOnFieldAndRename(const Str
     BSONObjBuilder extractedExclusion;
 
     // Check for a projection directly on 'oldName'. For example, {oldName: 0}.
-    if (auto it = _projectedFieldsSet.find(oldName); it != _projectedFieldsSet.end()) {
+    if (auto it = _projectedFields.find(oldName); it != _projectedFields.end()) {
         extractedExclusion.append(newName, false);
-        _projectedFieldsSet.erase(it);
-        _projectedFields.remove(std::string(oldName));
+        _projectedFields.erase(it);
     }
 
     // Check for a projection on subfields of 'oldName'. For example, {oldName: {a: 0, b: 0}}.
     if (auto it = _children.find(oldName); it != _children.end()) {
-        extractedExclusion.append(newName, it->second->serialize(boost::none, {}).toBson());
+        extractedExclusion.append(newName, it->second->serialize(boost::none).toBson());
         _children.erase(it);
     }