diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 987b38119..0a0afdc5c 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -701,9 +701,8 @@ ngx_ssl_load_certificate_key(ngx_pool_t *pool, char **err,
 
 #ifndef OPENSSL_NO_ENGINE
 
-        u_char      *p, *last;
-        ENGINE      *engine;
-        EVP_PKEY    *pkey;
+        u_char  *p, *last;
+        ENGINE  *engine;
 
         p = key->data + sizeof("engine:") - 1;
         last = (u_char *) ngx_strchr(p, ':');