diff --git a/pkg/yqlib/front_matter.go b/pkg/yqlib/front_matter.go
index 059dce9e..9142ba86 100644
--- a/pkg/yqlib/front_matter.go
+++ b/pkg/yqlib/front_matter.go
@@ -79,7 +79,7 @@ func (f *frontMatterHandlerImpl) Split() error {
 			return errReading
 		}
 
-		_, errWriting := yamlTempFile.Write([]byte(line))
+		_, errWriting := yamlTempFile.WriteString(line)
 
 		if errWriting != nil {
 			return errWriting