diff --git a/mkdocs/docs/faq/technical_behavior_and_limitations.md b/mkdocs/docs/faq/technical_behavior_and_limitations.md
index 099f5303..2c7411e4 100644
--- a/mkdocs/docs/faq/technical_behavior_and_limitations.md
+++ b/mkdocs/docs/faq/technical_behavior_and_limitations.md
@@ -284,7 +284,7 @@ be done so for debugging purposes.
 
 ## Does mergerfs support idmap?
 
-Yes. 
+Yes, by setting [allow-idmap=true](../config/options.md).
 Requires that
 [kernel-permissions-check](../config/kernel-permissions-check.md) be
 enabled (the default.)