diff --git a/packages/app-compat/src/public-types.ts b/packages/app-compat/src/public-types.ts
index 7c3aac1bed3..bc41cb2bd77 100644
--- a/packages/app-compat/src/public-types.ts
+++ b/packages/app-compat/src/public-types.ts
@@ -33,7 +33,7 @@ export interface FirebaseAppConfig {
   automaticDataCollectionEnabled?: boolean;
 }
 
-interface FirebaseAppContructor {
+interface FirebaseAppConstructor {
   new (): FirebaseApp;
 }
 
@@ -85,7 +85,7 @@ export interface FirebaseNamespace {
      *
      * DO NOT call this constuctor directly (use firebase.app() instead).
      */
-    App: FirebaseAppContructor;
+    App: FirebaseAppConstructor;
   };
 
   /**