diff --git a/CHANGELOG.md b/CHANGELOG.md
index 800d490d37..cbb6e33fbf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ HumHub Changelog
 - Fix #4942: MemberOf Display in LDAP CLI Show User Details
 - Fix #4465: LDAP PHP 8 incompatibility (multiPageSearch)
 - Fix #4946: Fix migration of the default permissions
+- Fix #4955: Fix convert emoji with sign "+"
 - Fix #4956: Fix file hash column length
 
 
diff --git a/protected/humhub/modules/content/widgets/richtext/extensions/emoji/RichTextEmojiExtension.php b/protected/humhub/modules/content/widgets/richtext/extensions/emoji/RichTextEmojiExtension.php
index 3cf33e2abc..396e07f231 100644
--- a/protected/humhub/modules/content/widgets/richtext/extensions/emoji/RichTextEmojiExtension.php
+++ b/protected/humhub/modules/content/widgets/richtext/extensions/emoji/RichTextEmojiExtension.php
@@ -20,7 +20,7 @@ class RichTextEmojiExtension extends RichTextContentExtension
     /**
      * @inheritdoc
      */
-    const REGEX = '/[:|;](([A-Za-z0-9_-])+)[:|;]/';
+    const REGEX = '/[:|;](([A-Za-z0-9_\-+])+)[:|;]/';
 
     /**
      * @inheritdoc