diff --git a/pkg/watcher/watcher.go b/pkg/watcher/watcher.go
index 9544d33..7bb9a46 100644
--- a/pkg/watcher/watcher.go
+++ b/pkg/watcher/watcher.go
@@ -32,8 +32,8 @@ var App = &cli.App{
 		//TODO: &cli.BoolFlag{Name: "normalize-log-level", Usage: "Normalize log.level values to Syslog defined keywords"},
 		//TODO: &cli.BoolFlag{Name: "parse-json"},
 		//
-		&cli.StringSliceFlag{Category: "selectors", Name: "pod-namespace", EnvVars: []string{"KUBE_POD_NAMESPACE"}},
-		&cli.StringSliceFlag{Category: "selectors", Name: "pod-prefix", EnvVars: []string{"KUBE_NODE_NAME"}},
+		&cli.StringSliceFlag{Category: "selectors", Name: "pod-namespace", EnvVars: []string{"KUBE_POD_NAMESPACE"}, Usage: "whitelist filter for filenames"},
+		&cli.StringSliceFlag{Category: "selectors", Name: "pod-prefix", EnvVars: []string{"KUBE_NODE_NAME"}, Usage: "blacklist filter for filenames"},
 		//
 		&cli.StringFlag{Category: "secrets", Name: "mongo-uri", EnvVars: []string{"MONGO_URI"}, Usage: "mongodb://foo:bar@host:27017/database", Required: true},
 	},
@@ -49,7 +49,7 @@ var App = &cli.App{
 	},
 
 	Action: func(ctx *cli.Context) error {
-		filterNamespace, filterPodPrefixes := sliceToMap(ctx.StringSlice("pod-namespace")), ctx.StringSlice("pod-prefix")
+		whitelistNamespaces, blacklistPodPrefixes := sliceToMap(ctx.StringSlice("pod-namespace")), ctx.StringSlice("pod-prefix")
 		var wg sync.WaitGroup
 
 		log.Printf("%s %s starting", ctx.App.Name, ctx.App.Version)
@@ -96,11 +96,11 @@ var App = &cli.App{
 						continue
 					}
 
-					if _, ok := filterNamespace[kubeInfo.Namespace]; !ok {
+					if _, ok := whitelistNamespaces[kubeInfo.Namespace]; !ok {
 						continue
 					}
 
-					if ok := hasSlicePrefix(kubeInfo.Pod, filterPodPrefixes); !ok {
+					if ok := hasSlicePrefix(kubeInfo.Pod, blacklistPodPrefixes); ok {
 						continue
 					}