diff --git a/AltBackup/BackupController.swift b/AltBackup/BackupController.swift
index e835e335..60d99dea 100644
--- a/AltBackup/BackupController.swift
+++ b/AltBackup/BackupController.swift
@@ -77,10 +77,6 @@ struct BackupError: ALTLocalizedError
 
 class BackupController: NSObject
 {
-    private var altstoreAppGroup: String? {
-        return Bundle.main.appGroups.first
-    }
-    
     private let fileCoordinator = NSFileCoordinator(filePresenter: nil)
     private let operationQueue = OperationQueue()
     
@@ -96,7 +92,7 @@ class BackupController: NSObject
             guard let bundleIdentifier = Bundle.main.bundleIdentifier else { throw BackupError(.invalidBundleID, description: NSLocalizedString("Unable to create backup directory.", comment: "")) }
             
             guard
-                let altstoreAppGroup = self.altstoreAppGroup,
+                let altstoreAppGroup = Bundle.main.altstoreAppGroup,
                 let sharedDirectoryURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: altstoreAppGroup)
             else { throw BackupError(.appGroupNotFound(nil), description: NSLocalizedString("Unable to create backup directory.", comment: "")) }
             
@@ -193,7 +189,7 @@ class BackupController: NSObject
             guard let bundleIdentifier = Bundle.main.bundleIdentifier else { throw BackupError(.invalidBundleID, description: NSLocalizedString("Unable to access backup.", comment: "")) }
             
             guard
-                let altstoreAppGroup = self.altstoreAppGroup,
+                let altstoreAppGroup = Bundle.main.altstoreAppGroup,
                 let sharedDirectoryURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: altstoreAppGroup)
             else { throw BackupError(.appGroupNotFound(nil), description: NSLocalizedString("Unable to access backup.", comment: "")) }
             
diff --git a/AltKit/Bundle+AltStore.swift b/AltKit/Bundle+AltStore.swift
index 280b547d..e5bb4e39 100644
--- a/AltKit/Bundle+AltStore.swift
+++ b/AltKit/Bundle+AltStore.swift
@@ -24,6 +24,8 @@ public extension Bundle
 
 public extension Bundle
 {
+    static var baseAltStoreAppGroupID = "group.com.rileytestut.AltStore"
+    
     var infoPlistURL: URL {
         let infoPlistURL = self.bundleURL.appendingPathComponent("Info.plist")
         return infoPlistURL
@@ -42,4 +44,9 @@ public extension Bundle
     var appGroups: [String] {
         return self.infoDictionary?[Bundle.Info.appGroups] as? [String] ?? []
     }
+    
+    var altstoreAppGroup: String? {        
+        let appGroup = self.appGroups.first { $0.contains(Bundle.baseAltStoreAppGroupID) }
+        return appGroup
+    }
 }