diff --git a/js/common/view/FluxMeterNode.ts b/js/common/view/FluxMeterNode.ts
index 64732101..be2be3a3 100644
--- a/js/common/view/FluxMeterNode.ts
+++ b/js/common/view/FluxMeterNode.ts
@@ -173,7 +173,7 @@ class FluxMeterNode extends Node {
       buttonOptions: {
         baseColor: PhetColorScheme.PHET_LOGO_BLUE
       },
-      tandem: options.tandem.createTandem( 'zoomButtons' )
+      tandem: options.tandem.createTandem( 'zoomButtonGroup' )
     } );
 
     // zoom buttons conditionally added to the view, but always created because I think that is required for PhET-iO
diff --git a/js/layer-model/view/LayersControl.ts b/js/layer-model/view/LayersControl.ts
index 7b5a6879..07316306 100644
--- a/js/layer-model/view/LayersControl.ts
+++ b/js/layer-model/view/LayersControl.ts
@@ -101,7 +101,7 @@ class LayersControl extends Panel {
         boundarySoundPlayer: numberOfLayersSoundPlayer,
 
         // phet-io
-        tandem: tandem.createTandem( 'numberOfLayersControl' )
+        tandem: tandem.createTandem( 'numberOfLayersPicker' )
       }
     );