diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6ddd3f1f864cbcc75d42594be90f6f42970c45d..0f11b523cb90f1ca7ac96e4891d426d78d033d17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+* `caosdb-v-property-linkified` css class to denote properties that have been
+  linkified already.
+
 ### Changed (for changes in existing functionality)
 
 ### Deprecated
@@ -16,29 +19,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+* [#199](https://gitlab.com/caosdb/caosdb-webui/-/issues/199) - Linkify creates
+  additional links after showing previews of referenced entities
+
 ### Security
 
 ### Documentation
 
 ## [0.10.1] - 2023-02-14
 
-### Added
-
-### Changed (for changes in existing functionality)
-
-### Deprecated
-
-### Removed
-
 ### Fixed
 
 * [#194](https://gitlab.com/caosdb/caosdb-webui/-/issues/194) - Properties
   remain hidden in previews of referenced entities
 
-### Security
-
-### Documentation
-
 ## [0.10.0] - 2022-12-19
 (Florian Spreckelsen)
 
diff --git a/src/core/js/ext_cosmetics.js b/src/core/js/ext_cosmetics.js
index 77556437394df6a6763661ce5c0d5001f68ce61a..da05f294f2022a469e74ec05d64211fe1f8b26b7 100644
--- a/src/core/js/ext_cosmetics.js
+++ b/src/core/js/ext_cosmetics.js
@@ -1,8 +1,9 @@
 /*
  * This file is a part of the CaosDB Project.
  *
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2023 IndiScale GmbH <info@indiscale.com>
  * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2023 Florian Spreckelsen <f.spreckelsen@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -37,7 +38,7 @@ var cosmetics = new function () {
 
     var _linkify = function () {
         $('.caosdb-f-property-text-value').each(function (index) {
-            if (/https?:\/\//.test(this.innerText)) {
+            if (!($(this).hasClass("caosdb-v-property-linkified")) && (/https?:\/\//.test(this.innerText))) {
                 var result = this.innerText.replace(/https?:\/\/[^\s]*/g, function (href, index) {
                     var link_text = href;
                     if (_link_cut_off_length > 4 && link_text.length > _link_cut_off_length) {
@@ -47,6 +48,9 @@ var cosmetics = new function () {
                     return `<a title="Open ${href} in a new tab." target="_blank" class="caosdb-v-property-href-value" href="${href}">${link_text} <i class="bi bi-box-arrow-up-right"></i></a>`;
                 });
 
+                // add class to highlight that this has been linkified already
+                // (see https://gitlab.com/caosdb/caosdb-webui/-/issues/199).
+                $(this).addClass("caosdb-v-property-linkified")
                 $(this).hide();
                 $(this).after(result);
             }
@@ -80,4 +84,4 @@ var cosmetics = new function () {
 
 $(document).ready(function () {
     caosdb_modules.register(cosmetics);
-});
\ No newline at end of file
+});