diff --git a/collector/iis.go b/collector/iis.go
index 148e2d15..c723775d 100644
--- a/collector/iis.go
+++ b/collector/iis.go
@@ -802,8 +802,8 @@ func NewIISCollector() (Collector, error) {
 			nil,
 		),
 
-		appWhitelistPattern: regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *siteWhitelist)),
-		appBlacklistPattern: regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *siteBlacklist)),
+		appWhitelistPattern: regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *appWhitelist)),
+		appBlacklistPattern: regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *appBlacklist)),
 	}
 
 	buildIIS.iis_version = getIISVersion()