diff --git a/sharing/outgoing_share_session_test.cc b/sharing/outgoing_share_session_test.cc
index 5c565963..cd633701 100644
--- a/sharing/outgoing_share_session_test.cc
+++ b/sharing/outgoing_share_session_test.cc
@@ -526,6 +526,7 @@ TEST_F(OutgoingShareSessionTest, AcceptTransferNotConnected) {
 
 TEST_F(OutgoingShareSessionTest, AcceptTransferNotReady) {
   FakeNearbyConnection connection;
+  session_.set_session_id(1234);
   ConnectionSuccess(&connection);
 
   EXPECT_THAT(
@@ -631,6 +632,7 @@ TEST_F(OutgoingShareSessionTest, HandleConnectionResponseAcceptResponse) {
   ConnectionResponseFrame response;
   response.set_status(ConnectionResponseFrame::ACCEPT);
   FakeNearbyConnection connection;
+  session_.set_session_id(1234);
   ConnectionSuccess(&connection);
   EXPECT_CALL(transfer_metadata_callback_,
               Call(_, HasStatus(TransferMetadata::Status::kInProgress)));
@@ -815,6 +817,7 @@ TEST_F(OutgoingShareSessionTest, SendNextPayload) {
 
 TEST_F(OutgoingShareSessionTest, ProcessKeyVerificationResultFail) {
   FakeNearbyConnection connection;
+  session_.set_session_id(1234);
   ConnectionSuccess(&connection);
   session_.SetTokenForTests("1234");
 
@@ -830,6 +833,7 @@ TEST_F(OutgoingShareSessionTest, ProcessKeyVerificationResultFail) {
 
 TEST_F(OutgoingShareSessionTest, ProcessKeyVerificationResultSuccess) {
   FakeNearbyConnection connection;
+  session_.set_session_id(1234);
   ConnectionSuccess(&connection);
   session_.SetTokenForTests("1234");
 
@@ -845,6 +849,7 @@ TEST_F(OutgoingShareSessionTest, ProcessKeyVerificationResultSuccess) {
 
 TEST_F(OutgoingShareSessionTest, DelayCompleteMetadataReceiverDisconnect) {
   FakeNearbyConnection connection;
+  session_.set_session_id(1234);
   ConnectionSuccess(&connection);
   TransferMetadata complete_metadata =
       TransferMetadataBuilder()
@@ -862,6 +867,7 @@ TEST_F(OutgoingShareSessionTest, DelayCompleteMetadataReceiverDisconnect) {
 
 TEST_F(OutgoingShareSessionTest, DelayCompleteMetadataDisconnectTimeout) {
   FakeNearbyConnection connection;
+  session_.set_session_id(1234);
   ConnectionSuccess(&connection);
   TransferMetadata complete_metadata =
       TransferMetadataBuilder()
@@ -907,6 +913,7 @@ TEST_F(OutgoingShareSessionTest, UpdateSessionForDedupWithoutCertificate) {
 TEST_F(OutgoingShareSessionTest, UpdateSessionForDedupConnectedIsNoOp) {
   auto share_target_org = session_.share_target();
   FakeNearbyConnection connection;
+  session_.set_session_id(1234);
   ConnectionSuccess(&connection);
   ShareTarget share_target2{
       "test_update_name",     ::nearby::network::Url(), ShareTargetType::kPhone,
diff --git a/sharing/share_session.h b/sharing/share_session.h
index 2c6f1aac..d3d0d68b 100644
--- a/sharing/share_session.h
+++ b/sharing/share_session.h
@@ -191,7 +191,7 @@ class ShareSession {
   std::shared_ptr<IncomingFramesReader> frames_reader_;
   std::shared_ptr<PairedKeyVerificationRunner> key_verification_runner_;
   std::shared_ptr<PayloadTracker> payload_tracker_;
-  int64_t session_id_;
+  int64_t session_id_ = 0;
   ::location::nearby::proto::sharing::OSType os_type_ =
       ::location::nearby::proto::sharing::OSType::UNKNOWN_OS_TYPE;
   bool self_share_ = false;