diff --git a/lib/rules/no-unknown-property.js b/lib/rules/no-unknown-property.js
index 4f5559992e..1cd76656e4 100644
--- a/lib/rules/no-unknown-property.js
+++ b/lib/rules/no-unknown-property.js
@@ -63,7 +63,7 @@ const ATTRIBUTE_TAGS_MAP = {
   imageSizes: ['link'],
   imageSrcSet: ['link'],
   property: ['meta'],
-  viewBox: ["marker", "pattern", "svg", "symbol", "view"],
+  viewBox: ['marker', 'pattern', 'svg', 'symbol', 'view'],
   as: ['link'],
   valign: ['tr', 'td', 'th', 'thead', 'tbody', 'tfoot', 'colgroup', 'col'], // deprecated, but known
   noModule: ['script'],
diff --git a/tests/lib/rules/no-unknown-property.js b/tests/lib/rules/no-unknown-property.js
index f2a8a6f2f6..35b012bfff 100644
--- a/tests/lib/rules/no-unknown-property.js
+++ b/tests/lib/rules/no-unknown-property.js
@@ -123,9 +123,9 @@ ruleTester.run('no-unknown-property', rule, {
     { code: '<video controlsList="nodownload" controls={this.controls} loop={true} muted={false} src={this.videoSrc} playsInline={true}></video>' },
     { code: '<audio controlsList="nodownload" controls={this.controls} crossOrigin="anonymous" disableRemotePlayback loop muted preload="none" src="something" onAbort={this.abort} onDurationChange={this.durationChange} onEmptied={this.emptied} onEnded={this.end} onError={this.error}></audio>' },
     { code: '<marker id={markerId} viewBox="0 0 2 2" refX="1" refY="1" markerWidth="1" markerHeight="1" orient="auto" />' },
-    { code: `<pattern id="pattern" viewBox="0,0,10,10" width="10%" height="10%" />`},
-    { code: `<symbol id="myDot" width="10" height="10" viewBox="0 0 2 2" />`},
-    { code: `<view id="one" viewBox="0 0 100 100" />`},
+    { code: '<pattern id="pattern" viewBox="0,0,10,10" width="10%" height="10%" />' },
+    { code: '<symbol id="myDot" width="10" height="10" viewBox="0 0 2 2" />' },
+    { code: '<view id="one" viewBox="0 0 100 100" />' },
     {
       code: `
         <table>