diff --git a/src/reverseproxy.js b/src/reverseproxy.js
index 7285ff40a..4cd52049d 100644
--- a/src/reverseproxy.js
+++ b/src/reverseproxy.js
@@ -170,7 +170,11 @@ function validateCertificate(location, domainObject, certificate) {
 function reload(callback) {
     if (process.env.BOX_ENV === 'test') return callback();
 
-    shell.sudo('reload', [ RELOAD_NGINX_CMD ], {}, callback);
+    shell.sudo('reload', [ RELOAD_NGINX_CMD ], {}, function (error) {
+        if (error) return callback(new BoxError(BoxError.NGINX_ERROR, error));
+
+        callback();
+    });
 }
 
 function generateFallbackCertificateSync(domainObject) {
@@ -390,7 +394,7 @@ function writeAdminNginxConfig(bundle, configFileName, vhost, callback) {
     var nginxConf = ejs.render(NGINX_APPCONFIG_EJS, data);
     var nginxConfigFilename = path.join(paths.NGINX_APPCONFIG_DIR, configFileName);
 
-    if (!safe.fs.writeFileSync(nginxConfigFilename, nginxConf)) return callback(safe.error);
+    if (!safe.fs.writeFileSync(nginxConfigFilename, nginxConf)) return callback(new BoxError(BoxError.FS_ERROR, safe.error));
 
     reload(callback);
 }
@@ -469,7 +473,7 @@ function writeAppNginxConfig(app, bundle, callback) {
 
     if (!safe.fs.writeFileSync(nginxConfigFilename, nginxConf)) {
         debug('Error creating nginx config for "%s" : %s', app.fqdn, safe.error.message);
-        return callback(safe.error);
+        return callback(new BoxError(BoxError.FS_ERROR, safe.error));
     }
 
     reload(callback);
@@ -501,7 +505,7 @@ function writeAppRedirectNginxConfig(app, fqdn, bundle, callback) {
 
     if (!safe.fs.writeFileSync(nginxConfigFilename, nginxConf)) {
         debug('Error creating nginx redirect config for "%s" : %s', app.fqdn, safe.error.message);
-        return callback(safe.error);
+        return callback(new BoxError(BoxError.FS_ERROR, safe.error));
     }
 
     reload(callback);
@@ -610,7 +614,7 @@ function renewCerts(options, auditSource, progressCallback, callback) {
                 if (appDomain.type === 'webadmin') configureFunc = writeAdminNginxConfig.bind(null, bundle, `${settings.adminFqdn()}.conf`, settings.adminFqdn());
                 else if (appDomain.type === 'main') configureFunc = writeAppNginxConfig.bind(null, appDomain.app, bundle);
                 else if (appDomain.type === 'alternate') configureFunc = writeAppRedirectNginxConfig.bind(null, appDomain.app, appDomain.fqdn, bundle);
-                else return iteratorCallback(new Error(`Unknown domain type for ${appDomain.fqdn}. This should never happen`));
+                else return iteratorCallback(new BoxError(BoxError.INTERNAL_ERROR, `Unknown domain type for ${appDomain.fqdn}. This should never happen`));
 
                 configureFunc(iteratorCallback);
             });
@@ -646,7 +650,7 @@ function writeDefaultConfig(callback) {
         var cn = 'cloudron-' + (new Date()).toISOString(); // randomize date a bit to keep firefox happy
         if (!safe.child_process.execSync(`openssl req -x509 -newkey rsa:2048 -keyout ${keyFilePath} -out ${certFilePath} -days 3650 -subj /CN=${cn} -nodes`)) {
             debug(`writeDefaultConfig: could not generate certificate: ${safe.error.message}`);
-            return callback(safe.error);
+            return callback(new BoxError(BoxError.OPENSSL_ERROR, safe.error));
         }
     }