diff --git a/web/static/src/ts/env.ts b/web/static/src/ts/env.ts
index e8d3a7d3..f62c0797 100644
--- a/web/static/src/ts/env.ts
+++ b/web/static/src/ts/env.ts
@@ -32,6 +32,7 @@ export interface Env extends WEnv {
 
   // configuration
   debug: boolean;
+  isMobile: boolean;
 }
 
 //------------------------------------------------------------------------------
@@ -72,6 +73,7 @@ export const makeEnvironment = memoize(function(): Env {
     notifications,
 
     rpc: ajax.rpc,
-    debug: false
+    debug: false,
+    isMobile: false
   };
 });
diff --git a/web/static/tests/helpers.ts b/web/static/tests/helpers.ts
index 204520e7..4b3e79fc 100644
--- a/web/static/tests/helpers.ts
+++ b/web/static/tests/helpers.ts
@@ -41,6 +41,7 @@ export function makeTestEnv(): Env {
     router,
     rpc: ajax.rpc,
     debug: false,
+    isMobile: false,
     menus: []
   };
 }