diff --git a/Website/src/activitys/MainApplication.tsx b/Website/src/activitys/MainApplication.tsx
index 837ecca1..53eea589 100644
--- a/Website/src/activitys/MainApplication.tsx
+++ b/Website/src/activitys/MainApplication.tsx
@@ -162,11 +162,10 @@ const MainApplication = () => {
                       // @ts-ignore
                       <Fab
                         onClick={() => {
-                          // @ts-ignore
                           Chooser.getFile(
                             "application/zip",
                             (file) => {
-                              if (file) {
+                              if (file !== "RESULT_CANCELED") {
                                 context.pushPage({
                                   component: TerminalActivity,
                                   key: "TerminalActivity",
diff --git a/Website/src/typings/global.d.ts b/Website/src/typings/global.d.ts
index 20534e83..df3bf65f 100644
--- a/Website/src/typings/global.d.ts
+++ b/Website/src/typings/global.d.ts
@@ -76,18 +76,29 @@ declare global {
     readonly __nativeStorage__: Pick<Storage, "getItem" | "setItem" | "removeItem" | "clear"> & { defineName: (name: string) => void };
   }
 
-  type TerminalExec = {
-    command: string;
-    env: Record<string, string>;
-    onLine: (line: string) => void;
-    onExit: (code: number) => void;
-  };
-
-  interface Terminal {
-    exec(opt: TerminalExec): void;
+  namespace Terminal {
+    export type Exec = {
+      command: string;
+      env: Record<string, string>;
+      onLine: (line: string) => void;
+      onExit: (code: number) => void;
+    };
+
+    export function exec(opt: Exec): void;
   }
 
-  const Terminal: Terminal;
+  namespace Chooser {
+    export type File = {
+      name: string;
+      uri: string;
+      path: string;
+    };
+
+    export type SuccessCallback = (file: File | "RESULT_CANCELED") => void;
+    export type ErrorCallback = ((code: number) => void) | null;
+
+    export function getFile(type: string, successCallback: SuccessCallback, ErrorCallback: ErrorCallback): any;
+  }
 
   interface Window extends AndroidWindow<any> {}