diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStoreMigration.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStoreMigration.kt
index cf7aaede8f..bbb14aaca0 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStoreMigration.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStoreMigration.kt
@@ -28,8 +28,7 @@ import javax.inject.Inject
  *  4, 5, 6, 7, 8, 9: migrations from RiotX (which was previously 1, 2, 3, 4, 5, 6).
  *  24: Delete nearly all the crypto DB
  */
-internal class RealmCryptoStoreMigration @Inject constructor(
-) : MatrixRealmMigration(
+internal class RealmCryptoStoreMigration @Inject constructor() : MatrixRealmMigration(
         dbName = "Crypto",
         schemaVersion = 24L,
 ) {
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/migration/MigrateCryptoTo024.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/migration/MigrateCryptoTo024.kt
index d7bb584d95..9a87eb4741 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/migration/MigrateCryptoTo024.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/migration/MigrateCryptoTo024.kt
@@ -21,7 +21,8 @@ import org.matrix.android.sdk.internal.util.database.RealmMigrator
 
 internal class MigrateCryptoTo024(realm: DynamicRealm) : RealmMigrator(realm, 24) {
     /**
-     * Delete the whole DB, except tables that are still used to store data:
+     * Delete the whole DB, except tables that are still used to store data.
+     * Keep:
      * - CryptoMetadataEntity
      * - MyDeviceLastSeenInfoEntity
      * - CryptoRoomEntity (but remove unused member 'outboundSessionInfo: OutboundGroupSessionInfoEntity')