diff --git a/vcf2fritzbox.go b/vcf2fritzbox.go
index 49a897c..6454eb5 100644
--- a/vcf2fritzbox.go
+++ b/vcf2fritzbox.go
@@ -20,7 +20,8 @@ func optExit(err error) {
 }
 
 func unfold(s string) string {
-	return strings.ReplaceAll(strings.ReplaceAll(s, "\r\n ", ""), "\r\n\t", "")
+	replacer := strings.NewReplacer("\r\n ", "", "\r\n\t", "")
+	return replacer.Replace(s)
 }
 
 func vCardValue(line string) string {