diff --git a/lib/core/sessions.js b/lib/core/sessions.js
index ff5268039d..672c8082ec 100644
--- a/lib/core/sessions.js
+++ b/lib/core/sessions.js
@@ -661,7 +661,12 @@ function commandSupportsReadConcern(command, options) {
     return true;
   }
 
-  if (command.mapReduce && options.out && (options.out.inline === 1 || options.out === 'inline')) {
+  if (
+    command.mapReduce &&
+    options &&
+    options.out &&
+    (options.out.inline === 1 || options.out === 'inline')
+  ) {
     return true;
   }
 
@@ -692,7 +697,7 @@ function applySession(session, command, options) {
   // first apply non-transaction-specific sessions data
   const inTransaction = session.inTransaction() || isTransactionCommand(command);
   const isRetryableWrite = options.willRetryWrite;
-  const shouldApplyReadConcern = commandSupportsReadConcern(command);
+  const shouldApplyReadConcern = commandSupportsReadConcern(command, options);
 
   if (serverSession.txnNumber && (isRetryableWrite || inTransaction)) {
     command.txnNumber = BSON.Long.fromNumber(serverSession.txnNumber);