diff --git a/panel/pane/vtk.py b/panel/pane/vtk.py
index 394ded6ed3..d9dccddca3 100644
--- a/panel/pane/vtk.py
+++ b/panel/pane/vtk.py
@@ -466,7 +466,7 @@ def _vtksjs_from_render_window(self, render_window):
                         if dsAttrs:
                             if colorArrayName >= 0:
                                 dataArray = dsAttrs.GetArray(colorArrayName)
-                            elif dsAttrs.GetNumberOfArrays() == 1:
+                            elif dsAttrs.GetNumberOfArrays() >= 1:
                                 dataArray = dsAttrs.GetArray(0)
 
                         if dataArray: