diff --git a/keepassxc-browser/content/keepassxc-browser.js b/keepassxc-browser/content/keepassxc-browser.js
index 60a4a47..7473c50 100755
--- a/keepassxc-browser/content/keepassxc-browser.js
+++ b/keepassxc-browser/content/keepassxc-browser.js
@@ -155,20 +155,19 @@ kpxcFields.inputQueryPattern = 'input[type=\'text\'], input[type=\'email\'], inp
 // copied from Sizzle.js
 kpxcFields.rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g;
 kpxcFields.fcssescape = function(ch, asCodePoint) {
-        if (asCodePoint) {
-
-             // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
-            if (ch === "\0") {
-                return "\uFFFD";
-            }
-
-             // Control characters and (dependent upon position) numbers get escaped as code points
-            return ch.slice(0, -1) + "\\" + ch.charCodeAt(ch.length - 1).toString(16) + " ";
+    if (asCodePoint) {
+        // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
+        if (ch === '\0') {
+            return '\uFFFD';
         }
 
-         // Other potentially-special ASCII characters get backslash-escaped
-        return "\\" + ch;
-    };
+        // Control characters and (dependent upon position) numbers get escaped as code points
+        return ch.slice(0, -1) + '\\' + ch.charCodeAt(ch.length - 1).toString(16) + ' ';
+    }
+
+    // Other potentially-special ASCII characters get backslash-escaped
+    return '\\' + ch;
+};
 
 // Unique number as new IDs for input fields
 kpxcFields.uniqueNumber = 342845638;
@@ -194,7 +193,7 @@ kpxcFields.setUniqueId = function(field) {
 };
 
 kpxcFields.prepareId = function(id) {
-    return (id + "").replace(kpxcFields.rcssescape, kpxcFields.fcssescape);
+    return (id + '').replace(kpxcFields.rcssescape, kpxcFields.fcssescape);
 };
 
 /**