diff --git a/background.d.ts b/background.d.ts
new file mode 100644
index 000000000..78d1c6119
--- /dev/null
+++ b/background.d.ts
@@ -0,0 +1,14 @@
+export interface ConfirmationDialogParams {
+    title?: string;
+    message: string;
+    messageSub?: string;
+    resolve?: any;
+    reject?: any;
+    okText?: string;
+    okTheme?: string;
+    closeTheme?: string;
+    cancelText?: string;
+    hideCancel?: boolean;
+    sessionIcon?: SessionIconType;
+    iconSize?: SessionIconSize;
+  }
diff --git a/ts/window.d.ts b/ts/window.d.ts
index e4c1b34a4..52a3f7e59 100644
--- a/ts/window.d.ts
+++ b/ts/window.d.ts
@@ -11,6 +11,7 @@ import { SwarmPolling } from './session/snode_api/swarmPolling';
 import { LibTextsecure } from '../libtextsecure';
 import { ConversationType } from '../js/modules/data';
 import { RecoveryPhraseUtil } from '../libloki/modules/mnemonic';
+import { ConfirmationDialogParams } from '../background';
 
 /*
 We declare window stuff here instead of global.d.ts because we are importing other declarations.
@@ -38,7 +39,7 @@ declare global {
     attemptConnection: ConversationType;
     clearLocalData: any;
     clipboard: any;
-    confirmationDialog: any;
+    confirmationDialog: (params: ConfirmationDialogParams) => any;
     dcodeIO: any;
     deleteAccount: any;
     displayNameRegex: any;