diff --git a/fs/reader.go b/fs/reader.go
index 4fe49d6..0f6a4f5 100644
--- a/fs/reader.go
+++ b/fs/reader.go
@@ -2,7 +2,7 @@ package fs
 
 import "io/fs"
 
-// ReaderFS combines all teh reader file system interfaces into a single
+// ReaderFS combines all the reader file system interfaces into a single
 // interface for convenience.
 type ReaderFS interface {
 	fs.GlobFS
diff --git a/slices/manipulate.go b/slices/manipulate.go
index 25de026..002350d 100644
--- a/slices/manipulate.go
+++ b/slices/manipulate.go
@@ -75,10 +75,8 @@ func Unshift[T any](slice []T, vs ...T) []T {
 	for range vs {
 		slice = append(slice, zero)
 	}
-	copy(slice[len(vs):], slice[:])
-	for i, v := range vs {
-		slice[i] = v
-	}
+	copy(slice[len(vs):], slice)
+	copy(slice, vs)
 	return slice
 }
 
diff --git a/slices/map.go b/slices/map.go
index 8dd7071..3f79600 100644
--- a/slices/map.go
+++ b/slices/map.go
@@ -193,7 +193,7 @@ func FirstIndex[T any](in []T, pred func(t T) bool) int {
 	return -1
 }
 
-// FirstOr returns the first tiem that matches the predicate. If nothing
+// FirstOr returns the first time that matches the predicate. If nothing
 // matches, the missed value is returned.
 func FirstOr[T any](in []T, missed T, pred func(t T) bool) T {
 	for _, t := range in {