diff --git a/quiche/quic/core/quic_flags_list.h b/quiche/quic/core/quic_flags_list.h
index 3fd7ec03a..26861a1b9 100644
--- a/quiche/quic/core/quic_flags_list.h
+++ b/quiche/quic/core/quic_flags_list.h
@@ -55,8 +55,6 @@ QUIC_FLAG(quic_reloadable_flag_quic_allow_client_enabled_bbr_v2, true)
 QUIC_FLAG(quic_restart_flag_quic_opport_bundle_qpack_decoder_data, false)
 // If true, an endpoint does not detect path degrading or blackholing until handshake gets confirmed.
 QUIC_FLAG(quic_reloadable_flag_quic_no_path_degrading_before_handshake_confirmed, true)
-// If true, check connected at the beginning of TlsHandshaker::SetReadSecret.
-QUIC_FLAG(quic_reloadable_flag_quic_check_connected_before_set_read_secret, true)
 // If true, default-enable 5RTO blachole detection.
 QUIC_FLAG(quic_reloadable_flag_quic_default_enable_5rto_blackhole_detection2, true)
 // If true, disable QUIC version Q046.
diff --git a/quiche/quic/core/tls_handshaker.cc b/quiche/quic/core/tls_handshaker.cc
index 741544125..da4d06304 100644
--- a/quiche/quic/core/tls_handshaker.cc
+++ b/quiche/quic/core/tls_handshaker.cc
@@ -290,15 +290,11 @@ bool TlsHandshaker::SetReadSecret(EncryptionLevel level,
                                   absl::Span<const uint8_t> read_secret) {
   QUIC_DVLOG(1) << ENDPOINT << "SetReadSecret level=" << level
                 << ", connection_closed=" << is_connection_closed();
-  if (check_connected_before_set_read_secret_) {
-    if (is_connection_closed()) {
-      QUIC_RELOADABLE_FLAG_COUNT_N(quic_check_connected_before_set_read_secret,
-                                   1, 2);
-      return false;
-    }
-    QUIC_RELOADABLE_FLAG_COUNT_N(quic_check_connected_before_set_read_secret, 2,
-                                 2);
+
+  if (is_connection_closed()) {
+    return false;
   }
+
   std::unique_ptr<QuicDecrypter> decrypter =
       QuicDecrypter::CreateFromCipherSuite(SSL_CIPHER_get_id(cipher));
   const EVP_MD* prf = Prf(cipher);
diff --git a/quiche/quic/core/tls_handshaker.h b/quiche/quic/core/tls_handshaker.h
index 71bede125..e2ee604ab 100644
--- a/quiche/quic/core/tls_handshaker.h
+++ b/quiche/quic/core/tls_handshaker.h
@@ -204,8 +204,6 @@ class QUICHE_EXPORT TlsHandshaker : public TlsConnection::Delegate,
 
   int expected_ssl_error_ = SSL_ERROR_WANT_READ;
   bool is_connection_closed_ = false;
-  const bool check_connected_before_set_read_secret_ =
-      GetQuicReloadableFlag(quic_check_connected_before_set_read_secret);
 
   QuicCryptoStream* stream_;
   HandshakerDelegateInterface* handshaker_delegate_;