diff --git a/src/compiler/bounding-box.ts b/src/compiler/bounding-box.ts
index 8ae3ca3dd..2974af36c 100644
--- a/src/compiler/bounding-box.ts
+++ b/src/compiler/bounding-box.ts
@@ -385,7 +385,7 @@ export function getNumOfYAxes(tracks: Track[]): number {
 const getTextTrack = (size: Size, title?: string, subtitle?: string) => {
     return JSON.parse(
         JSON.stringify({
-            mark: 'header',
+            mark: '_header',
             width: size.width,
             height: size.height,
             title,
diff --git a/src/compiler/gosling-to-higlass.ts b/src/compiler/gosling-to-higlass.ts
index 6d5296f46..77577b346 100644
--- a/src/compiler/gosling-to-higlass.ts
+++ b/src/compiler/gosling-to-higlass.ts
@@ -282,7 +282,7 @@ export function goslingToHiGlass(
         });
 
         hgModel.validateSpec(true);
-    } else if (firstResolvedSpec.mark === 'header') {
+    } else if (firstResolvedSpec.mark === '_header') {
         // `text` tracks are used to show title and subtitle of the views
         hgModel.addDefaultView(`${trackId}-title`).setLayout(layout);
         if (typeof firstResolvedSpec.title === 'string') {