diff --git a/app/diagnostics.go b/app/diagnostics.go
index 017013380f..e42a740c2d 100644
--- a/app/diagnostics.go
+++ b/app/diagnostics.go
@@ -289,6 +289,7 @@ func (a *App) trackConfig() {
 		"isdefault_tls_key_file":                                  isDefault(*cfg.ServiceSettings.TLSKeyFile, model.SERVICE_SETTINGS_DEFAULT_TLS_KEY_FILE),
 		"isdefault_read_timeout":                                  isDefault(*cfg.ServiceSettings.ReadTimeout, model.SERVICE_SETTINGS_DEFAULT_READ_TIMEOUT),
 		"isdefault_write_timeout":                                 isDefault(*cfg.ServiceSettings.WriteTimeout, model.SERVICE_SETTINGS_DEFAULT_WRITE_TIMEOUT),
+		"isdefault_idle_timeout":                                  isDefault(*cfg.ServiceSettings.IdleTimeout, model.SERVICE_SETTINGS_DEFAULT_IDLE_TIMEOUT),
 		"isdefault_google_developer_key":                          isDefault(cfg.ServiceSettings.GoogleDeveloperKey, ""),
 		"isdefault_allow_cors_from":                               isDefault(*cfg.ServiceSettings.AllowCorsFrom, model.SERVICE_SETTINGS_DEFAULT_ALLOW_CORS_FROM),
 		"isdefault_cors_exposed_headers":                          isDefault(cfg.ServiceSettings.CorsExposedHeaders, ""),