diff --git a/packages/firestore/android/src/main/java/io/invertase/firebase/firestore/UniversalFirebaseFirestoreCommon.java b/packages/firestore/android/src/main/java/io/invertase/firebase/firestore/UniversalFirebaseFirestoreCommon.java
index b241b9344c..b435057d19 100644
--- a/packages/firestore/android/src/main/java/io/invertase/firebase/firestore/UniversalFirebaseFirestoreCommon.java
+++ b/packages/firestore/android/src/main/java/io/invertase/firebase/firestore/UniversalFirebaseFirestoreCommon.java
@@ -50,7 +50,7 @@ static FirebaseFirestore getFirestoreForApp(String appName, String databaseId) {
 
     setFirestoreSettings(instance, firestoreKey);
 
-    instanceCache.put(appName, new WeakReference<FirebaseFirestore>(instance));
+    instanceCache.put(firestoreKey, new WeakReference<FirebaseFirestore>(instance));
 
     return instance;
   }