diff --git a/pkg/kubectl/resource/builder.go b/pkg/kubectl/resource/builder.go
index baa03eeb2b9..5ce4d1c77cc 100644
--- a/pkg/kubectl/resource/builder.go
+++ b/pkg/kubectl/resource/builder.go
@@ -609,6 +609,7 @@ func SplitResourceArgument(arg string) []string {
 		if set.Has(s) {
 			continue
 		}
+		set.Insert(s)
 		out = append(out, s)
 	}
 	return out