diff --git a/utils/setup.php b/utils/setup.php
index 07b929a1..90374e74 100755
--- a/utils/setup.php
+++ b/utils/setup.php
@@ -730,7 +730,7 @@
 		}
 	}
 
-	if (isset($aCMDResult['drop']))
+	if ($aCMDResult['drop'])
 	{
 		// The implementation is potentially a bit dangerous because it uses
 		// a positive selection of tables to keep, and deletes everything else.