diff --git a/config.md b/config.md
index b489605bd..ad0004194 100644
--- a/config.md
+++ b/config.md
@@ -38,6 +38,7 @@ Each container has exactly one *root filesystem*, specified in the *root* object
 
 You can add array of mount points inside container as `mounts`.
 Each record in this array must have configuration in [runtime config](runtime-config.md#mount-configuration).
+The runtime MUST mount entries in the listed order.
 
 * **name** (string, required) Name of mount point. Used for config lookup.
 * **path** (string, required) Destination of mount point: path inside container.