small doc improvement [ci skip]

ddnexus · Sep 21, 2019 · 60d243c · 60d243c
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commit 60d243c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/extras.md b/docs/extras.md
@@ -61,7 +61,7 @@ If you use any of them you should load the [pagy.js](https://github.com/ddnexus/
 
 ### Add the oj gem
 
-Although it's not a requirement, if you are on ruby 2.0+ (not jruby), you should add the `gem 'oj'` to your Gemfile. When available, Pagy will automatically use it to boost the performance.
+Although it's not a requirement, if you are on ruby 2.0+ (not jruby), and if you use any `*_nav_js` helper, you should add the `gem 'oj'` to your Gemfile. When available, Pagy will automatically use it to boost the performance. (Notice: It does nothing for normal, non-js helpers.)
 
 ### In rails apps