diff --git a/Polyhedron/demo/Polyhedron/Viewer.cpp b/Polyhedron/demo/Polyhedron/Viewer.cpp
index 9d596f6ee14..9ca0cb3ced8 100644
--- a/Polyhedron/demo/Polyhedron/Viewer.cpp
+++ b/Polyhedron/demo/Polyhedron/Viewer.cpp
@@ -1673,8 +1673,6 @@ void Viewer::enableClippingBox(QVector4D box[6])
     d->clipbox[i] = box[i];
 }
 
-bool Viewer::isRecent() const { return d->is_recent; }
-
 
 bool Viewer::isOpenGL_4_3() const { return d->is_ogl_4_3; }