diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index d7fc4d2..ad567e3 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -1035,7 +1035,7 @@
 
     sslerr = 0;
 
-    /* SSL_shutdown() never return -1, on error it return 0 */
+    /* SSL_shutdown() never returns -1, on error it returns 0 */
 
     if (n != 1) {
         sslerr = SSL_get_error(c->ssl->connection, n);