diff --git a/vector/src/main/java/im/vector/app/features/widgets/WidgetAPICallback.kt b/vector/src/main/java/im/vector/app/features/widgets/WidgetAPICallback.kt
deleted file mode 100644
index ad17a5ae87..0000000000
--- a/vector/src/main/java/im/vector/app/features/widgets/WidgetAPICallback.kt
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 2020 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package im.vector.app.features.widgets
-
-import im.vector.app.R
-import im.vector.app.core.resources.StringProvider
-import org.matrix.android.sdk.api.MatrixCallback
-import org.matrix.android.sdk.api.session.widgets.WidgetPostAPIMediator
-import org.matrix.android.sdk.api.util.JsonDict
-
-class WidgetAPICallback(private val postAPIMediator: WidgetPostAPIMediator,
-                        private val eventData: JsonDict,
-                        private val stringProvider: StringProvider) : MatrixCallback<Any> {
-
-    override fun onFailure(failure: Throwable) {
-        postAPIMediator.sendError(stringProvider.getString(R.string.widget_integration_failed_to_send_request), eventData)
-    }
-
-    override fun onSuccess(data: Any) {
-        postAPIMediator.sendSuccess(eventData)
-    }
-}
diff --git a/vector/src/main/java/im/vector/app/features/widgets/WidgetPostAPIHandler.kt b/vector/src/main/java/im/vector/app/features/widgets/WidgetPostAPIHandler.kt
index f5b2c7e4a8..9fa04aabbb 100644
--- a/vector/src/main/java/im/vector/app/features/widgets/WidgetPostAPIHandler.kt
+++ b/vector/src/main/java/im/vector/app/features/widgets/WidgetPostAPIHandler.kt
@@ -464,10 +464,6 @@ class WidgetPostAPIHandler @AssistedInject constructor(@Assisted private val roo
         return false
     }
 
-    private fun createWidgetAPICallback(widgetPostAPIMediator: WidgetPostAPIMediator, eventData: JsonDict): WidgetAPICallback {
-        return WidgetAPICallback(widgetPostAPIMediator, eventData, stringProvider)
-    }
-
     private fun launchWidgetAPIAction(widgetPostAPIMediator: WidgetPostAPIMediator, eventData: JsonDict, block: suspend () -> Unit): Job {
         return GlobalScope.launch {
             kotlin.runCatching {