diff --git a/HISTORY.md b/HISTORY.md
index f48907f4..7dd296ea 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -4,7 +4,8 @@
 
 ## unpublished changes since version 10.1.0
 
-- Fix: upgrade to the latest version of `ace`. 
+- Fix: when editing a key giving it a ` (copy)` suffix, the suffix was removed. 
+- Fix: upgrade to the latest version of `ace`.
 
 ## 2024-06-19, version 10.1.0
 
diff --git a/src/js/util.js b/src/js/util.js
index 30605857..15e21216 100644
--- a/src/js/util.js
+++ b/src/js/util.js
@@ -1021,6 +1021,10 @@ export function get (object, path) {
  * @param {Array} existingPropNames    Array with existing prop names
  */
 export function findUniqueName (name, existingPropNames) {
+  if (existingPropNames.indexOf(name) === -1) {
+    return name
+  }
+
   const strippedName = name.replace(/ \(copy( \d+)?\)$/, '')
   let validName = strippedName
   let i = 1
diff --git a/test/util.test.js b/test/util.test.js
index 46095fae..23437ec9 100644
--- a/test/util.test.js
+++ b/test/util.test.js
@@ -376,6 +376,11 @@ describe('util', () => {
       'b (copy 2)',
       'c'
     ]), 'b (copy 3)')
+
+    assert.strictEqual(findUniqueName('b (copy)', [
+      'a',
+      'c'
+    ]), 'b (copy)')
   })
 
   it('should format a document size in a human readable way', () => {