diff --git a/lib/interfaces/common.js b/lib/interfaces/common.js
index a1612e3eb4..ee709e16b5 100644
--- a/lib/interfaces/common.js
+++ b/lib/interfaces/common.js
@@ -148,7 +148,7 @@ module.exports = function (suites, context, mocha) {
           const suiteResult = opts.fn.call(suite);
           if (suiteResult instanceof Promise) {
             errors.deprecate(
-              'Suite "' +
+              '[mocha] Suite "' +
                 suite.fullTitle() +
                 '" returned a Promise. ' +
                 'Asynchronous suites are not supported, use a ' +