diff --git a/src/viewer.js b/src/viewer.js
index d72ac37ab08..7f247465375 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -27,6 +27,7 @@ if (typeof OCA.Viewer === 'undefined') {
 		component: AsyncTextViewerComponent,
 		group: null,
 		theme: 'default',
+		darkHeader: false,
 		canCompare: true,
 	})
 }