diff --git a/src/legacy/core_plugins/metrics/server/lib/vis_data/__tests__/helpers/bucket_transform.js b/src/legacy/core_plugins/metrics/server/lib/vis_data/__tests__/helpers/bucket_transform.js
index e0db2422f80b4..8edb7cd77f603 100644
--- a/src/legacy/core_plugins/metrics/server/lib/vis_data/__tests__/helpers/bucket_transform.js
+++ b/src/legacy/core_plugins/metrics/server/lib/vis_data/__tests__/helpers/bucket_transform.js
@@ -437,7 +437,7 @@ describe('bucketTransform', () => {
           },
           gap_policy: 'skip',
           script: {
-            source: 'params.value > 0 ? params.value : 0',
+            source: 'params.value > 0.0 ? params.value : 0.0',
             lang: 'painless'
           }
         }
diff --git a/src/legacy/core_plugins/metrics/server/lib/vis_data/helpers/bucket_transform.js b/src/legacy/core_plugins/metrics/server/lib/vis_data/helpers/bucket_transform.js
index c487e541beb39..459da1a3d8486 100644
--- a/src/legacy/core_plugins/metrics/server/lib/vis_data/helpers/bucket_transform.js
+++ b/src/legacy/core_plugins/metrics/server/lib/vis_data/helpers/bucket_transform.js
@@ -252,7 +252,7 @@ export default {
           value: getBucketsPath(bucket.field, metrics),
         },
         script: {
-          source: 'params.value > 0 ? params.value : 0',
+          source: 'params.value > 0.0 ? params.value : 0.0',
           lang: 'painless',
         },
         gap_policy: 'skip', // seems sane