diff --git a/slices/map.go b/slices/map.go
index c54de57..a1bce4e 100644
--- a/slices/map.go
+++ b/slices/map.go
@@ -7,6 +7,10 @@ import "context"
 // MapWithContextError transforms a slice of a given type to a new slice of a
 // different type using a context and can return an error.
 func MapWithContextError[T, K any](ctx context.Context, ss []T, fn func(context.Context, T) (K, error)) ([]K, error) {
+	if ss == nil {
+		return nil, nil
+	}
+
 	var res = make([]K, len(ss))
 
 	for i, v := range ss {
diff --git a/slices/map_test.go b/slices/map_test.go
index f2939e5..a686d13 100644
--- a/slices/map_test.go
+++ b/slices/map_test.go
@@ -41,6 +41,12 @@ func TestMapWithContextError(t *testing.T) {
 			},
 			want: []int64{1, 22},
 		},
+		{
+			name: "nil",
+			fn: func(context.Context, string) (int64, error) {
+				return 0, nil
+			},
+		},
 	} {
 		t.Run(tt.name, func(t *testing.T) {
 			got, err := MapWithContextError(ctx, tt.in, tt.fn)