diff --git a/src/mol-geo/geometry/direct-volume/direct-volume.ts b/src/mol-geo/geometry/direct-volume/direct-volume.ts
index f566d11d73fc1c95f0b31a54d058f8bee2cc8d79..6c66f91ab0c59ad004e33287e58846c1e76917d7 100644
--- a/src/mol-geo/geometry/direct-volume/direct-volume.ts
+++ b/src/mol-geo/geometry/direct-volume/direct-volume.ts
@@ -130,7 +130,7 @@ export namespace DirectVolume {
         ValueCell.updateIfChanged(values.dUseFog, props.useFog)
         ValueCell.updateIfChanged(values.dRenderMode, props.renderMode)
 
-        const controlPoints = getControlPointsFromString(props.controlPoints)
+        const controlPoints = getControlPointsFromVec2Array(props.controlPoints)
         createTransferFunctionTexture(controlPoints, values.tTransferTex)
     }
 
diff --git a/src/mol-plugin/ui/controls/parameters.tsx b/src/mol-plugin/ui/controls/parameters.tsx
index f0ffdf8ed0dae0c55a0bfd4f8da9c2faae533401..a8bd921d238db8e7cc805604c130eb68577a2df7 100644
--- a/src/mol-plugin/ui/controls/parameters.tsx
+++ b/src/mol-plugin/ui/controls/parameters.tsx
@@ -11,7 +11,6 @@ import { ParamDefinition as PD } from 'mol-util/param-definition';
 import { camelCaseToWords } from 'mol-util/string';
 import { ColorNames, ColorNamesValueMap } from 'mol-util/color/tables';
 import { Color } from 'mol-util/color';
-import { Slider } from './slider';
 import { Vec2 } from 'mol-math/linear-algebra';
 import LineGraphComponent from './LineGraph/LineGraphComponent';