1 files changed, 8 insertions, 0 deletions
diff --git a/src/mongo/db/matcher/expression.cpp b/src/mongo/db/matcher/expression.cpp
index 35e32c447a1..46c1546ef5a 100644
--- a/src/mongo/db/matcher/expression.cpp
+++ b/src/mongo/db/matcher/expression.cpp
@@ -62,11 +62,19 @@ namespace mongo {
         debug << "$atomic\n";
     }
 
+    void AtomicMatchExpression::toBSON(BSONObjBuilder* out) const {
+        out->append("$isolated", 1);
+    }
+
     void FalseMatchExpression::debugString( StringBuilder& debug, int level ) const {
         _debugAddSpace( debug, level );
         debug << "$false\n";
     }
 
+    void FalseMatchExpression::toBSON(BSONObjBuilder* out) const {
+        out->append("$false", 1);
+    }
+
 }