diff --git a/filter.go b/filter.go
index d153d4e..522b64b 100644
--- a/filter.go
+++ b/filter.go
@@ -37,13 +37,13 @@ func FindLastIndex[T any](slice []T, f FilterFunc[T]) (int, bool) {
 	return -1, false
 }
 
-func Not[T any](filter func(v T) bool) FilterFunc[T] {
+func Not[T any](filter FilterFunc[T]) FilterFunc[T] {
 	return func(v T) bool {
 		return !filter(v)
 	}
 }
 
-func And[T any](filters ...func(v T) bool) FilterFunc[T] {
+func And[T any](filters ...FilterFunc[T]) FilterFunc[T] {
 	return func(v T) bool {
 		for _, filter := range filters {
 			if !filter(v) {
@@ -54,7 +54,7 @@ func And[T any](filters ...func(v T) bool) FilterFunc[T] {
 	}
 }
 
-func Or[T any](filters ...func(v T) bool) FilterFunc[T] {
+func Or[T any](filters ...FilterFunc[T]) FilterFunc[T] {
 	return func(v T) bool {
 		for _, filter := range filters {
 			if filter(v) {