diff --git a/lighthouse-core/scoring.js b/lighthouse-core/scoring.js
index 7f61d697b37c..3b8ec8e2197f 100644
--- a/lighthouse-core/scoring.js
+++ b/lighthouse-core/scoring.js
@@ -15,7 +15,14 @@ class ReportScoring {
   static arithmeticMean(items) {
     const results = items.reduce(
       (result, item) => {
-        const score = Number(item.score) || 0;
+        // HACK. remove this in the next PR
+        // Srsly. The score inconsitency has been very bad.
+        let itemScore = item.score;
+        if (typeof item.score === 'boolean') {
+          itemScore = item.score ? 100 : 0;
+        }
+
+        const score = Number(itemScore) || 0;
         const weight = Number(item.weight) || 0;
         return {
           weight: result.weight + weight,
@@ -70,7 +77,7 @@ class ReportScoring {
       const categoryScore = ReportScoring.arithmeticMean(scores);
       // mutate config.categories[].score
       category.score = categoryScore;
-    };
+    }
   }
 }
 
diff --git a/lighthouse-core/test/report/v2/renderer/report-renderer-test.js b/lighthouse-core/test/report/v2/renderer/report-renderer-test.js
index b01e8592815d..4440c254f5a6 100644
--- a/lighthouse-core/test/report/v2/renderer/report-renderer-test.js
+++ b/lighthouse-core/test/report/v2/renderer/report-renderer-test.js
@@ -119,7 +119,7 @@ describe('ReportRenderer V2', () => {
       const container = renderer._dom._document.body;
       const originalResults = JSON.parse(JSON.stringify(sampleResults));
       renderer.renderReport(sampleResults, container);
-      assert.deepStrictEqual(sampleResults, originalResults)
+      assert.deepStrictEqual(sampleResults, originalResults);
     }).timeout(2000);
 
     it('renders a left nav', () => {
diff --git a/lighthouse-core/test/runner-test.js b/lighthouse-core/test/runner-test.js
index 364a2041bc72..a385799409d9 100644
--- a/lighthouse-core/test/runner-test.js
+++ b/lighthouse-core/test/runner-test.js
@@ -445,7 +445,7 @@ describe('Runner', () => {
       assert.equal(results.initialUrl, url);
       assert.equal(gatherRunnerRunSpy.called, true, 'GatherRunner.run was not called');
       assert.equal(results.audits['content-width'].name, 'content-width');
-      assert.equal(results.audits['content-width'].score, 100);
+      assert.equal(results.audits['content-width'].score, true);
       assert.equal(results.reportCategories[0].score, 100);
       assert.equal(results.reportCategories[0].audits[0].id, 'content-width');
     });