diff --git a/src/components/timeline/TrackPowerGraph.js b/src/components/timeline/TrackPowerGraph.js
index b930e1424c..070b93b241 100644
--- a/src/components/timeline/TrackPowerGraph.js
+++ b/src/components/timeline/TrackPowerGraph.js
@@ -124,6 +124,7 @@ class TrackPowerCanvas extends React.PureComponent<CanvasProps> {
       // power graph.
 
       ctx.lineWidth = deviceLineWidth;
+      ctx.lineJoin = 'bevel';
       ctx.strokeStyle = GREY_50;
       ctx.fillStyle = '#73737388'; // Grey 50 with transparency.
       ctx.beginPath();
diff --git a/src/test/components/__snapshots__/TrackPower.test.js.snap b/src/test/components/__snapshots__/TrackPower.test.js.snap
index ff26e785a8..3e195d7595 100644
--- a/src/test/components/__snapshots__/TrackPower.test.js.snap
+++ b/src/test/components/__snapshots__/TrackPower.test.js.snap
@@ -45,6 +45,10 @@ Array [
     "set lineWidth",
     2,
   ],
+  Array [
+    "set lineJoin",
+    "bevel",
+  ],
   Array [
     "set strokeStyle",
     "#737373",