diff --git a/data/core.yaml b/data/core.yaml
index 3b938951f..2857a5c89 100644
--- a/data/core.yaml
+++ b/data/core.yaml
@@ -1768,7 +1768,7 @@ en:
         message:
           one: "{highway} is disconnected from other roads and paths"
           other: "{count} routable features are connected only to each other"
-        reference: "All roads, paths, and ferry routes should connect to form a single routing network."
+        reference: "All roads, paths, and ferry routes should connect to form a single routing network. This feature (or small collection of features) is either disconnected from the routing network or only connected to it via a feature that few applications consider routable."
     fixme_tag:
       message: '{feature} has a "Fix Me" request'
       reference: 'A "fixme" tag indicates that a mapper has requested help with a feature.'
@@ -2407,4 +2407,4 @@ en:
   wikidata:
     identifier: "Identifier"
     label: "Label"
-    description: "Description"
\ No newline at end of file
+    description: "Description"