diff --git a/script.go b/script.go
index 6c0be95..7c5abc5 100644
--- a/script.go
+++ b/script.go
@@ -5,11 +5,11 @@ import (
 	"regexp"
 )
 
-func ScriptEscape(source []byte) (escaped []byte) {
+func ScriptEscape(source string) (escaped string) {
 	rxp2 := regexp.MustCompile("([\"\\\\$])")
-	source = rxp2.ReplaceAll(source, []byte("\\$1"))
+	source = rxp2.ReplaceAllString(source, "\\$1")
 
 	rxp := regexp.MustCompile("\\r?\\n")
-	escaped = rxp.ReplaceAll(source, []byte("\\r\\\r\n    \\n"))
+	escaped = rxp.ReplaceAllString(source, "\\r\\\r\n    \\n")
 	return
 }