diff --git a/Sources/Packages/Sources/SecretKit/PublicKeyStandinFileController.swift b/Sources/Packages/Sources/SecretKit/PublicKeyStandinFileController.swift
index 3eff37f..3f6db48 100644
--- a/Sources/Packages/Sources/SecretKit/PublicKeyStandinFileController.swift
+++ b/Sources/Packages/Sources/SecretKit/PublicKeyStandinFileController.swift
@@ -5,10 +5,11 @@ import OSLog
 public class PublicKeyFileStoreController {
 
     private let logger = Logger()
-    private let directory = NSHomeDirectory().appending("/PublicKeys")
+    private let directory: String
 
     /// Initializes a PublicKeyFileStoreController.
-    public init() {
+    public init(homeDirectory: String) {
+        directory = homeDirectory.appending("/PublicKeys")
     }
 
     /// Writes out the keys specified to disk.
diff --git a/Sources/SecretAgent/AppDelegate.swift b/Sources/SecretAgent/AppDelegate.swift
index cbf20b7..2c221dd 100644
--- a/Sources/SecretAgent/AppDelegate.swift
+++ b/Sources/SecretAgent/AppDelegate.swift
@@ -18,7 +18,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     }()
     private let updater = Updater(checkOnLaunch: false)
     private let notifier = Notifier()
-    private let publicKeyFileStoreController = PublicKeyFileStoreController()
+    private let publicKeyFileStoreController = PublicKeyFileStoreController(homeDirectory: NSHomeDirectory())
     private lazy var agent: Agent = {
         Agent(storeList: storeList, witness: notifier)
     }()
diff --git a/Sources/Secretive/Views/SecretDetailView.swift b/Sources/Secretive/Views/SecretDetailView.swift
index 1980ddc..d756679 100644
--- a/Sources/Secretive/Views/SecretDetailView.swift
+++ b/Sources/Secretive/Views/SecretDetailView.swift
@@ -6,7 +6,7 @@ struct SecretDetailView<SecretType: Secret>: View {
     @State var secret: SecretType
 
     private let keyWriter = OpenSSHKeyWriter()
-    private let publicKeyFileStoreController = PublicKeyFileStoreController()
+    private let publicKeyFileStoreController = PublicKeyFileStoreController(homeDirectory: NSHomeDirectory().replacingOccurrences(of: Bundle.main.hostBundleID, with: Bundle.main.agentBundleID))
     
     var body: some View {
         ScrollView {