diff --git a/src/main/java/eu/siacs/conversations/utils/BackupFileHeader.java b/src/main/java/eu/siacs/conversations/utils/BackupFileHeader.java
index b3b63d5bd..9030a71c7 100644
--- a/src/main/java/eu/siacs/conversations/utils/BackupFileHeader.java
+++ b/src/main/java/eu/siacs/conversations/utils/BackupFileHeader.java
@@ -30,7 +30,7 @@ public class BackupFileHeader {
     }
 
     public BackupFileHeader(String app, Jid jid, long timestamp, byte[] iv, byte[] salt) {
-        this.app = app.replace("sum7", "siacs");
+        this.app = app;
         this.jid = jid;
         this.timestamp = timestamp;
         this.iv = iv;
@@ -39,7 +39,7 @@ public class BackupFileHeader {
 
     public void write(DataOutputStream dataOutputStream) throws IOException {
         dataOutputStream.writeInt(VERSION);
-        dataOutputStream.writeUTF(app);
+        dataOutputStream.writeUTF(app.replace("sum7", "siacs"));
         dataOutputStream.writeUTF(jid.asBareJid().toEscapedString());
         dataOutputStream.writeLong(timestamp);
         dataOutputStream.write(iv);
@@ -51,7 +51,7 @@ public class BackupFileHeader {
         if (version > VERSION) {
             throw new IllegalArgumentException("Backup File version was "+version+" but app only supports up to version "+VERSION);
         }
-        String app = inputStream.readUTF();
+        String app = inputStream.readUTF().replace("siacs", "sum7);
         String jid = inputStream.readUTF();
         long timestamp = inputStream.readLong();
         byte[] iv = new byte[12];
@@ -59,7 +59,7 @@ public class BackupFileHeader {
         byte[] salt = new byte[16];
         inputStream.readFully(salt);
 
-        return new BackupFileHeader(app.replace("sum7", "siacs"),Jid.of(jid),timestamp,iv,salt);
+        return new BackupFileHeader(app,Jid.of(jid),timestamp,iv,salt);
 
     }