diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6b01f5b..e184e5e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -10,6 +10,8 @@ repos:
       - id: detect-private-key
       - id: end-of-file-fixer
       - id: fix-byte-order-marker
+      - id: trailing-whitespace
+        exclude_types: [markdown]
   - repo: https://github.com/thlorenz/doctoc
     rev: v2.2.0
     hooks:
diff --git a/nodejs/myip.js b/nodejs/myip.js
index 9fab229..4032eaa 100755
--- a/nodejs/myip.js
+++ b/nodejs/myip.js
@@ -33,7 +33,7 @@ var myip6 = function () {
     // Check where myip.opendns.com resolves to and I think this is a function
     // that takes arguments err and addresses.
     dns.resolve6('myip.opendns.com', function (err, addresses) {
-    
+
     // if err contains a truthy value, an error has occurred
     if (err) throw err;