diff --git a/cli/src/declarations.ts b/cli/src/declarations.ts
index febbb42fae..f6d50468ff 100644
--- a/cli/src/declarations.ts
+++ b/cli/src/declarations.ts
@@ -271,7 +271,7 @@ export interface CapacitorConfig {
      * @since 4.5.0
      * @default false
      */
-    useLegacyBridge: boolean;
+    useLegacyBridge?: boolean;
   };
 
   ios?: {