diff --git a/.werks/14214 b/.werks/14214
new file mode 100644
index 00000000000..0a7ffc73c35
--- /dev/null
+++ b/.werks/14214
@@ -0,0 +1,10 @@
+Title: Broken hostname icon link for parent/child topology
+Class: fix
+Compatible: compat
+Component: multisite
+Date: 1698039942
+Edition: cre
+Level: 1
+Version: 2.3.0b1
+
+The parameter host_name in the icon url was wrong. It now uses host_regex instead.
diff --git a/cmk/gui/views/icon/topology.py b/cmk/gui/views/icon/topology.py
index 5d4ff77d030..ad17bb939f1 100644
--- a/cmk/gui/views/icon/topology.py
+++ b/cmk/gui/views/icon/topology.py
@@ -30,7 +30,7 @@ def render(  # type: ignore[no-untyped-def]
     ) -> tuple[str, str, str]:
         url = makeuri_contextless(
             request,
-            [("host_name", row["host_name"])],
+            [("host_regex", f"{row['host_name']}$")],
             filename="parent_child_topology.py",
         )
         return "aggr", _("Host Parent/Child topology"), url
diff --git a/web/htdocs/js/modules/nodevis/utils.ts b/web/htdocs/js/modules/nodevis/utils.ts
index 4ed0963aee0..7a54d006943 100644
--- a/web/htdocs/js/modules/nodevis/utils.ts
+++ b/web/htdocs/js/modules/nodevis/utils.ts
@@ -224,7 +224,7 @@ export class SearchFilters {
     _build_regex_from_set(entries: Set<string>): string {
         const list_entries: string[] = [];
         entries.forEach(hostname => {
-            list_entries.push(hostname);
+            list_entries.push(hostname + "$");
         });
 
         if (list_entries.length > 1) return "(" + list_entries.join("|") + ")";
@@ -241,7 +241,7 @@ export class SearchFilters {
             .replace(/\)+$/, "")
             .split("|")
             .forEach((hostname?: string) => {
-                if (hostname) current_hosts.add(hostname);
+                if (hostname) current_hosts.add(hostname.replace(/\$+$/g, ""));
             });
         return current_hosts;
     }