diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 3573dc850..2c6d44595 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -90,6 +90,10 @@ int  ngx_connection_index;
 ngx_int_t
 ngx_ssl_init(ngx_log_t *log)
 {
+#if OPENSSL_VERSION_NUMBER >= 0x00907000
+    OPENSSL_config(NULL);
+#endif
+
     SSL_library_init();
     SSL_load_error_strings();
 
diff --git a/src/event/ngx_event_openssl.h b/src/event/ngx_event_openssl.h
index 9777fe3d9..7247fd225 100644
--- a/src/event/ngx_event_openssl.h
+++ b/src/event/ngx_event_openssl.h
@@ -15,6 +15,7 @@
 #include <openssl/err.h>
 
 #if OPENSSL_VERSION_NUMBER >= 0x00907000
+#include <openssl/conf.h>
 #include <openssl/engine.h>
 #define NGX_SSL_ENGINE   1
 #endif