diff --git a/assets/js/roles-chart.js b/assets/js/roles-chart.js
index b3d69ef..bc4de18 100644
--- a/assets/js/roles-chart.js
+++ b/assets/js/roles-chart.js
@@ -64,7 +64,7 @@ function drawChart() {
           {{- if $add_redacted -}}
               {{- $.Scratch.Set "parents" ( $.Scratch.Get "parents" | append "███████████████" ) -}}
           {{- else -}}
-            {{- $.Scratch.Set "parents" ( $.Scratch.Get "parents" | append ( ( partial "cv/organisation/get_top_level_ancestor.html" . ) | plainify ) ) -}}
+            {{- $.Scratch.Set "parents" ( $.Scratch.Get "parents" | append ( ( partial "cv/organisation/get_top_level_ancestor.html" . ) | .RenderString | plainify ) ) -}}
           {{- end -}}
         {{- else -}}
           {{ erroridf "missing-organisation" "Could not find organisation %q (%q)" . $.File.Path }}