1 files changed, 2 insertions, 1 deletions
diff --git a/test/parallel/test-http2-client-rststream-before-connect.js b/test/parallel/test-http2-client-rststream-before-connect.js
index 8c3eb9bec3..d186f418b5 100644
--- a/test/parallel/test-http2-client-rststream-before-connect.js
+++ b/test/parallel/test-http2-client-rststream-before-connect.js
@@ -5,6 +5,7 @@ if (!common.hasCrypto)
   common.skip('missing crypto');
 const assert = require('assert');
 const h2 = require('http2');
+const { inspect } = require('util');
 
 const server = h2.createServer();
 server.on('stream', (stream) => {
@@ -35,7 +36,7 @@ server.listen(0, common.mustCall(() => {
       {
         type: TypeError,
         code: 'ERR_INVALID_CALLBACK',
-        message: 'Callback must be a function'
+        message: `Callback must be a function. Received ${inspect(notFunction)}`
       }
     );
     assert.strictEqual(req.closed, false);