diff --git a/wcfsetup/install/lang/en.xml b/wcfsetup/install/lang/en.xml
index d265e413cb5..0205d6b4016 100644
--- a/wcfsetup/install/lang/en.xml
+++ b/wcfsetup/install/lang/en.xml
@@ -1876,6 +1876,7 @@ The database is carefully maintained, but there will be always be a margin of er
 		<item name="wcf.acp.package.update.errorCode.401"><![CDATA[Your credentials are invalid, please verify {if $updateServer->requiresLicense()}license and serial number{else}username and password{/if}.]]></item>
 		<item name="wcf.acp.package.update.errorCode.402"><![CDATA[{if $updateServer->requiresLicense()}License and serial number{else}Username and password{/if} have been accepted by the server, but they do not grant you the permission to download this commercial product.]]></item>
 		<item name="wcf.acp.package.update.errorCode.403"><![CDATA[You are not allowed to access this package.]]></item>
+		<item name="wcf.acp.package.update.errorCode.404"><![CDATA[The requested package could not be found on the update server.]]></item>
 		<item name="wcf.acp.package.update.authInsufficient"><![CDATA[The credentials are valid, but do not allow the download of {if $packageName}the package “<strong>{$packageName}</strong>”{else}this package{/if}.]]></item>
 		<item name="wcf.acp.package.update.licenseNo"><![CDATA[License Number]]></item>
 		<item name="wcf.acp.package.update.password"><![CDATA[Password]]></item>