diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index f387c72..62b475d 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -2573,6 +2573,18 @@
 
     sslerr = SSL_get_error(c->ssl->connection, n);
 
+    if (sslerr == SSL_ERROR_ZERO_RETURN) {
+
+        /*
+         * OpenSSL 1.1.1 fails to return SSL_ERROR_SYSCALL if an error
+         * happens during SSL_write() after close_notify alert from the
+         * peer, and returns SSL_ERROR_ZERO_RETURN instead,
+         * https://git.openssl.org/?p=openssl.git;a=commitdiff;h=8051ab2
+         */
+
+        sslerr = SSL_ERROR_SYSCALL;
+    }
+
     err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
 
     ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);