diff --git a/pkg/filters/options.go b/pkg/filters/options.go
index 0244b0f1..1ec13a00 100644
--- a/pkg/filters/options.go
+++ b/pkg/filters/options.go
@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"slices"
 	"strings"
 	"sync"
 	"time"
@@ -120,6 +121,8 @@ func (o *Options) Namespaces(clientset kubernetes.Interface) []string {
 		excludeNamespaces := o.ExcludeNamespaces
 
 		if len(o.IncludeNamespaces) > 0 {
+			slices.Sort(includeNamespaces)
+			includeNamespaces = slices.Compact(includeNamespaces)
 
 			for _, ns := range includeNamespaces {
 
@@ -137,10 +140,6 @@ func (o *Options) Namespaces(clientset kubernetes.Interface) []string {
 				return
 			}
 
-			for _, ns := range namespaceList.Items {
-				namespacesMap[ns.Name] = false
-			}
-
 			for _, ns := range namespaceList.Items {
 				namespacesMap[ns.Name] = true
 			}