diff --git a/core-bundle/src/Resources/contao/library/Contao/DcaExtractor.php b/core-bundle/src/Resources/contao/library/Contao/DcaExtractor.php
index <HASH>..<HASH> 100644
--- a/core-bundle/src/Resources/contao/library/Contao/DcaExtractor.php
+++ b/core-bundle/src/Resources/contao/library/Contao/DcaExtractor.php
@@ -111,6 +111,7 @@ class DcaExtractor extends \Database\Installer
 		else
 		{
 			include	$this->strFile;
+			$this->blnIsDbTable = true;
 		}
 	}
[Core] Do not offer to drop all tables when installing an extension (see #<I>)