diff --git a/typo3/sysext/core/Documentation/Changelog/master/Deprecation-80485-MethodParameterOfTSFE-whichWorkspaceToReturnTheWorkspaceTitle.rst b/typo3/sysext/core/Documentation/Changelog/master/Deprecation-80485-MethodParameterOfTSFE-whichWorkspaceToReturnTheWorkspaceTitle.rst
new file mode 100644
index 0000000000000000000000000000000000000000..26f2e66457df2205e23cc2fcdd67f5a27e489333
--- /dev/null
+++ b/typo3/sysext/core/Documentation/Changelog/master/Deprecation-80485-MethodParameterOfTSFE-whichWorkspaceToReturnTheWorkspaceTitle.rst
@@ -0,0 +1,39 @@
+.. include:: ../../Includes.txt
+
+============================================================================================
+Deprecation: #80485 - Method parameter of TSFE->whichWorkspace to return the workspace title
+============================================================================================
+
+See :issue:`80485`
+
+Description
+===========
+
+The method php::`TypoScriptFrontendController->whichWorkspace()` has an optional first parameter
+to return the workspace title of the current workspace instead of the current workspace UID.
+
+This parameter has been marked as deprecated.
+
+
+Impact
+======
+
+When calling the method above with the method parameter set to "true", a deprecation message is
+triggered.
+
+
+Affected Installations
+======================
+
+Any installation using this PHP method with the parameter set to "true" via a custom extension which
+deals with workspaces for frontend output (e.g. for editors to know in which workspace a user is 
+currently previewing a page).
+
+
+Migration
+=========
+
+If the workspace title is necessary, a separate SQL call should be done right after
+`whichWorkspace()` is called in the extensions' PHP code.
+
+.. index:: Frontend, PHP-API
\ No newline at end of file
diff --git a/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php b/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php
index fcb0ec1c614f825f5b1214b5a479ceddf216df58..3d969597343cd951e583ea8afe62b86b4814fdae 100644
--- a/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php
+++ b/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php
@@ -4124,7 +4124,7 @@ class TypoScriptFrontendController
     /**
      * Returns the name of the workspace
      *
-     * @param bool $returnTitle If set, returns title of current workspace being previewed
+     * @param bool $returnTitle If set, returns title of current workspace being previewed, please be aware that this parameter is deprecated as of TYPO3 v8, and will be removed in TYPO3 v9
      * @return string|int|NULL If $returnTitle is set, returns string (title), otherwise workspace integer for which workspace is being preview. NULL if none.
      */
     public function whichWorkspace($returnTitle = false)
@@ -4136,6 +4136,7 @@ class TypoScriptFrontendController
             $ws = $this->getBackendUser()->workspace;
         }
         if ($ws && $returnTitle) {
+            GeneralUtility::deprecationLog('The parameter $returnTitle of $TSFE->whichWorkspace() is marked as deprecated and has no effect anymore. It will be removed in TYPO3 v9.');
             if (ExtensionManagementUtility::isLoaded('workspaces')) {
                 $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
                     ->getQueryBuilderForTable('sys_workspace');