diff --git a/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php b/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php
index 199a12d3f6..7ae575a98f 100644
--- a/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php
+++ b/typo3/sysext/frontend/Classes/Controller/TypoScriptFrontendController.php
@@ -3074,6 +3074,9 @@ class TypoScriptFrontendController
         ];
         $this->cacheExpires = $expirationTstamp;
         $this->pageCacheTags[] = 'pageId_' . $cacheData['page_id'];
+        if ($cacheData['page_id'] !== $this->contentPid) {
+            $this->pageCacheTags[] = 'pageId_' . $this->contentPid;
+        }
         if ($this->page_cache_reg1) {
             $reg1 = (int)$this->page_cache_reg1;
             $cacheData['reg1'] = $reg1;