diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupAuthData.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupAuthData.kt
index 9cf02ca22e..2a620af843 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupAuthData.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupAuthData.kt
@@ -77,4 +77,3 @@ data class MegolmBackupAuthData(
                 .signalableJSONDictionary()
     }
 }
-
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/registration/AuthParams.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/registration/AuthParams.kt
index bad503f756..cb17207741 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/registration/AuthParams.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/registration/AuthParams.kt
@@ -88,4 +88,3 @@ internal data class AuthParams(
         }
     }
 }
-
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/network/parsing/RuntimeJsonAdapterFactory.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/network/parsing/RuntimeJsonAdapterFactory.kt
index 36fce2b094..0aaa4991cd 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/network/parsing/RuntimeJsonAdapterFactory.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/network/parsing/RuntimeJsonAdapterFactory.kt
@@ -77,8 +77,8 @@ internal class RuntimeJsonAdapterFactory<T>(
         override fun fromJson(reader: JsonReader): Any? {
             val peekedToken = reader.peek()
             if (peekedToken != JsonReader.Token.BEGIN_OBJECT) {
-                throw JsonDataException("Expected BEGIN_OBJECT but was " + peekedToken
-                        + " at path " + reader.path)
+                throw JsonDataException("Expected BEGIN_OBJECT but was " + peekedToken +
+                        " at path " + reader.path)
             }
             val jsonValue = reader.readJsonValue()
             val jsonObject = jsonValue as Map<String, Any>?
@@ -91,13 +91,13 @@ internal class RuntimeJsonAdapterFactory<T>(
         override fun toJson(writer: JsonWriter, value: Any?) {
             val type: Class<*> = value!!.javaClass
             val label = typeToLabel[type]
-                    ?: throw IllegalArgumentException("Expected one of "
-                            + typeToLabel.keys
-                            + " but found "
-                            + value
-                            + ", a "
-                            + value.javaClass
-                            + ". Register this subtype.")
+                    ?: throw IllegalArgumentException("Expected one of " +
+                            typeToLabel.keys +
+                            " but found " +
+                            value +
+                            ", a " +
+                            value.javaClass +
+                            ". Register this subtype.")
             val adapter = labelToAdapter[label]!!
             val jsonValue = adapter.toJsonValue(value) as Map<String, Any>?
             val valueWithLabel: MutableMap<String, Any> = LinkedHashMap(1 + jsonValue!!.size)