diff --git a/app/src/main/cpp/skyline/services/am/controller/ISelfController.cpp b/app/src/main/cpp/skyline/services/am/controller/ISelfController.cpp
index 4f0389f9..467a905b 100644
--- a/app/src/main/cpp/skyline/services/am/controller/ISelfController.cpp
+++ b/app/src/main/cpp/skyline/services/am/controller/ISelfController.cpp
@@ -71,11 +71,16 @@ namespace skyline::service::am {
     }
 
     Result ISelfController::SetIdleTimeDetectionExtension(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
-        auto idleTimeDetectionExtension{request.Pop<u32>()};
+        idleTimeDetectionExtension = request.Pop<u32>();
         Logger::Debug("Setting Idle Time Detection Extension: 0x{:X}", idleTimeDetectionExtension);
         return {};
     }
 
+    Result ISelfController::GetIdleTimeDetectionExtension(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        response.Push<u32>(idleTimeDetectionExtension);
+        return {};
+    }
+
     Result ISelfController::GetAccumulatedSuspendedTickValue(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
         // TODO: Properly handle this after we implement game suspending
         response.Push<u64>(0);
diff --git a/app/src/main/cpp/skyline/services/am/controller/ISelfController.h b/app/src/main/cpp/skyline/services/am/controller/ISelfController.h
index 22360f1c..f6f3e290 100644
--- a/app/src/main/cpp/skyline/services/am/controller/ISelfController.h
+++ b/app/src/main/cpp/skyline/services/am/controller/ISelfController.h
@@ -19,6 +19,7 @@ namespace skyline::service::am {
         std::shared_ptr<kernel::type::KEvent> libraryAppletLaunchableEvent; //!< This KEvent is triggered when the library applet is launchable
         std::shared_ptr<kernel::type::KEvent> accumulatedSuspendedTickChangedEvent; //!< This KEvent is triggered when the time the system has spent in suspend is updated
         std::shared_ptr<hosbinder::IHOSBinderDriver> hosbinder; //!< IHOSBinder service for managed display layers
+        u32 idleTimeDetectionExtension{0};
 
       public:
         ISelfController(const DeviceState &state, ServiceManager &manager);
@@ -98,6 +99,11 @@ namespace skyline::service::am {
          */
         Result SetIdleTimeDetectionExtension(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
 
+        /**
+         * @url https://switchbrew.org/wiki/Applet_Manager_services#GetIdleTimeDetectionExtension
+         */
+        Result GetIdleTimeDetectionExtension(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
         /**
          * @brief Returns how long the process was suspended for in ticks
          * @url https://switchbrew.org/wiki/Applet_Manager_services#GetAccumulatedSuspendedTickValue
@@ -129,6 +135,7 @@ namespace skyline::service::am {
             SFUNC(0x13, ISelfController, SetAlbumImageOrientation),
             SFUNC(0x28, ISelfController, CreateManagedDisplayLayer),
             SFUNC(0x3E, ISelfController, SetIdleTimeDetectionExtension),
+            SFUNC(0x3F, ISelfController, GetIdleTimeDetectionExtension),
             SFUNC(0x5A, ISelfController, GetAccumulatedSuspendedTickValue),
             SFUNC(0x5B, ISelfController, GetAccumulatedSuspendedTickChangedEvent),
             SFUNC(0x64, ISelfController, SetAlbumImageTakenNotificationEnabled)