diff --git a/app/src/main/kotlin/com/tutpro/baresip/Utils.kt b/app/src/main/kotlin/com/tutpro/baresip/Utils.kt
index f0ccb024..eadf4a93 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/Utils.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/Utils.kt
@@ -783,7 +783,7 @@ object Utils {
 
     fun unZip(zipFilePath: String): Boolean {
         val allFiles = listOf("accounts", "calls", "config", "contacts", "messages", "uuid",
-                "zrtp_cache.dat", "gzrtp_zid", "cert.pem", "ca_cert", "ca_certs.crt")
+                "gzrtp_zid", "cert.pem", "ca_cert", "ca_certs.crt")
         val zipFiles = mutableListOf<String>()
         try {
             ZipFile(zipFilePath).use { zip ->