diff --git a/lib/_tls_wrap.js b/lib/_tls_wrap.js
index d918656a360c7a..887db012e78402 100644
--- a/lib/_tls_wrap.js
+++ b/lib/_tls_wrap.js
@@ -974,7 +974,7 @@ exports.connect = function(/* [port, host], options, cb */) {
   assert(typeof options.minDHSize === 'number',
          'options.minDHSize is not a number: ' + options.minDHSize);
   assert(options.minDHSize > 0,
-         'options.minDHSize is not a posivie number: ' +
+         'options.minDHSize is not a positive number: ' +
          options.minDHSize);
 
   var hostname = options.servername ||
diff --git a/test/parallel/test-tls-client-mindhsize.js b/test/parallel/test-tls-client-mindhsize.js
index a497fdd9f2de62..a67a3cd67d983b 100644
--- a/test/parallel/test-tls-client-mindhsize.js
+++ b/test/parallel/test-tls-client-mindhsize.js
@@ -78,6 +78,15 @@ testDHE1024();
 assert.throws(() => test(512, true, assert.fail),
               /DH parameter is less than 1024 bits/);
 
+[0, -1, -Infinity, NaN].forEach(minDHSize => {
+  assert.throws(() => tls.connect({ minDHSize }),
+                /minDHSize is not a positive number/);
+});
+
+[true, false, null, undefined, {}, [], '', '1'].forEach(minDHSize => {
+  assert.throws(() => tls.connect({ minDHSize }), /minDHSize is not a number/);
+});
+
 process.on('exit', function() {
   assert.equal(nsuccess, 1);
   assert.equal(nerror, 1);