diff --git a/content/en/getting-started/configuration.md b/content/en/getting-started/configuration.md
index de978f510..cb2eed4cd 100644
--- a/content/en/getting-started/configuration.md
+++ b/content/en/getting-started/configuration.md
@@ -439,8 +439,8 @@ You can override any of these cache setting in your own `config.toml`.
 : This is the value of the `resourceDir` config option.
 
 maxAge
-: This is the time in seconds before a cache entry will be evicted, -1 means forever and 0 effectively turns that particular cache off.
-
+: This is the duration before a cache entry will be evicted, -1 means forever and 0 effectively turns that particular cache off. Uses Go's `time.Duration`, so valid values are `"10s"` (10 seconds), `"10m"` (10 minutes) and `"10m"` (10 hours).
+ 
 dir
 : The absolute path to where the files for this cache will be stored. Allowed starting placeholders are `:cacheDir` and `:resourceDir` (see above).