1 files changed, 2 insertions, 2 deletions
diff --git a/src/mongo/db/exec/merge_sort.h b/src/mongo/db/exec/merge_sort.h
index 6992214064b..5a25a3243cd 100644
--- a/src/mongo/db/exec/merge_sort.h
+++ b/src/mongo/db/exec/merge_sort.h
@@ -76,7 +76,7 @@ public:
 
 private:
     struct StageWithValue {
-        StageWithValue() : id(WorkingSet::INVALID_ID), stage(NULL) {}
+        StageWithValue() : id(WorkingSet::INVALID_ID), stage(nullptr) {}
         WorkingSetID id;
         PlanStage* stage;
     };
@@ -135,7 +135,7 @@ private:
 // Parameters that must be provided to a MergeSortStage
 class MergeSortStageParams {
 public:
-    MergeSortStageParams() : collator(NULL), dedup(true) {}
+    MergeSortStageParams() : collator(nullptr), dedup(true) {}
 
     // How we're sorting.
     BSONObj pattern;