diff --git a/src/event/ngx_event_openssl.h b/src/event/ngx_event_openssl.h
index 7fc6bc0..f298aeb 100644
--- a/src/event/ngx_event_openssl.h
+++ b/src/event/ngx_event_openssl.h
@@ -14,6 +14,13 @@
 #include <openssl/ssl.h>
 #include <openssl/err.h>
 
+#if OPENSSL_VERSION_NUMBER >= 0x00907000
+#include <openssl/engine.h>
+#define NGX_SSL_ENGINE     1
+#endif
+
+#define NGX_SSL_NAME       "OpenSSL"
+
 
 typedef struct {
     SSL                   *ssl;
@@ -38,7 +45,6 @@
 
 #define NGX_SSL_BUFFER       1
 
-
 #define NGX_SSL_BUFSIZE      16384