diff --git a/tests/node-qunit/ui/thumbnail.test.js b/tests/node-qunit/ui/thumbnail.test.js
index 3600020d5..d844cc2e3 100644
--- a/tests/node-qunit/ui/thumbnail.test.js
+++ b/tests/node-qunit/ui/thumbnail.test.js
@@ -71,32 +71,32 @@ QUnit.test( 'createThumbnail - tall image element', ( assert ) => {
 		} );
 
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.find( 'image' ).attr( 'x' ) ),
+			+thumbnail.el.find( 'image' ).attr( 'x' ),
 			case_.expectedX,
 			`Image element x coordinate is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.find( 'image' ).attr( 'y' ) ),
+			+thumbnail.el.find( 'image' ).attr( 'y' ),
 			case_.expectedY,
 			`Image element y coordinate is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.find( 'image' ).attr( 'width' ) ),
+			+thumbnail.el.find( 'image' ).attr( 'width' ),
 			case_.width,
 			`Image element width is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.find( 'image' ).attr( 'height' ) ),
+			+thumbnail.el.find( 'image' ).attr( 'height' ),
 			case_.height,
 			`Image element height is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.attr( 'width' ) ),
+			+thumbnail.el.attr( 'width' ),
 			case_.expectedSVGWidth,
 			`Image SVG width is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.attr( 'height' ) ),
+			+thumbnail.el.attr( 'height' ),
 			case_.expectedSVGHeight,
 			`Image SVG height is correct. ${case_.message}`
 		);
@@ -169,32 +169,32 @@ QUnit.test( 'createThumbnail - landscape image element', ( assert ) => {
 		} );
 
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.find( 'image' ).attr( 'x' ) ),
+			+thumbnail.el.find( 'image' ).attr( 'x' ),
 			case_.expectedX,
 			`Image x coordinate is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.find( 'image' ).attr( 'y' ) ),
+			+thumbnail.el.find( 'image' ).attr( 'y' ),
 			case_.expectedY,
 			`Image y coordinate is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.find( 'image' ).attr( 'width' ) ),
+			+thumbnail.el.find( 'image' ).attr( 'width' ),
 			case_.width,
 			`Image element width is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.find( 'image' ).attr( 'height' ) ),
+			+thumbnail.el.find( 'image' ).attr( 'height' ),
 			case_.height,
 			`Image element height is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.attr( 'width' ) ),
+			+thumbnail.el.attr( 'width' ),
 			case_.expectedSVGWidth,
 			`Image SVG width is correct. ${case_.message}`
 		);
 		assert.strictEqual(
-			Number.parseFloat( thumbnail.el.attr( 'height' ) ),
+			+thumbnail.el.attr( 'height' ),
 			case_.expectedSVGHeight,
 			`Image SVG height is correct. ${case_.message}`
 		);