diff --git a/packages/components/src/vega-specs/spec-distributions.json b/packages/components/src/vega-specs/spec-distributions.json
index 5ca9576f..74559a03 100644
--- a/packages/components/src/vega-specs/spec-distributions.json
+++ b/packages/components/src/vega-specs/spec-distributions.json
@@ -48,7 +48,7 @@
             "value": 0
           },
           "fill": {
-            "signal": "{gradient: 'linear', x1: 1, y1: 1, x2: 0, y2: 1, stops: [ {offset: 0.0, color: '#4C78A8'}] }"
+            "value": "#4C78A8"
           },
           "interpolate": {
             "value": "monotone"