diff --git a/Sources/EeveeSpotify/HookedInstances.x.swift b/Sources/EeveeSpotify/HookedInstances.x.swift
index 5238004..cc7d65b 100644
--- a/Sources/EeveeSpotify/HookedInstances.x.swift
+++ b/Sources/EeveeSpotify/HookedInstances.x.swift
@@ -8,7 +8,7 @@ class SPTCoreProductStateInstanceHook: ClassHook<NSObject> {
 
     static let targetName = "SPTCoreProductState"
 
-    func stringForKey(_ key: String) -> String {
+    func stringForKey(_ key: String) -> NSString {
 
         HookedInstances.productState = Dynamic.convert(
             target,