diff --git a/src/core/hle/service/am/service/self_controller.cpp b/src/core/hle/service/am/service/self_controller.cpp
index 4279483727..70ce7443c4 100644
--- a/src/core/hle/service/am/service/self_controller.cpp
+++ b/src/core/hle/service/am/service/self_controller.cpp
@@ -57,7 +57,7 @@ ISelfController::ISelfController(Core::System& system_, std::shared_ptr<Applet>
         {64, nullptr, "SetInputDetectionSourceSet"},
         {65, D<&ISelfController::ReportUserIsActive>, "ReportUserIsActive"},
         {66, nullptr, "GetCurrentIlluminance"},
-        {67, nullptr, "IsIlluminanceAvailable"},
+        {67, D<&ISelfController::IsIlluminanceAvailable>, "IsIlluminanceAvailable"},
         {68, D<&ISelfController::SetAutoSleepDisabled>, "SetAutoSleepDisabled"},
         {69, D<&ISelfController::IsAutoSleepDisabled>, "IsAutoSleepDisabled"},
         {70, nullptr, "ReportMultimediaError"},
@@ -347,6 +347,12 @@ Result ISelfController::IsAutoSleepDisabled(Out<bool> out_is_auto_sleep_disabled
     R_SUCCEED();
 }
 
+Result ISelfController::IsIlluminanceAvailable(Out<bool> out_is_illuminance_available) {
+    LOG_WARNING(Service_AM, "(stubbed)");
+    *out_is_illuminance_available = false;
+    R_SUCCEED();
+}
+
 Result ISelfController::SetInputDetectionPolicy(InputDetectionPolicy input_detection_policy) {
     LOG_WARNING(Service_AM, "(STUBBED) called");
     R_SUCCEED();
diff --git a/src/core/hle/service/am/service/self_controller.h b/src/core/hle/service/am/service/self_controller.h
index 86cd9f1118..b6403abde2 100644
--- a/src/core/hle/service/am/service/self_controller.h
+++ b/src/core/hle/service/am/service/self_controller.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -60,6 +60,7 @@ private:
     Result ReportUserIsActive();
     Result SetAutoSleepDisabled(bool is_auto_sleep_disabled);
     Result IsAutoSleepDisabled(Out<bool> out_is_auto_sleep_disabled);
+    Result IsIlluminanceAvailable(Out<bool> out_is_illuminance_available);
     Result SetInputDetectionPolicy(InputDetectionPolicy input_detection_policy);
     Result GetAccumulatedSuspendedTickValue(Out<u64> out_accumulated_suspended_tick_value);
     Result GetAccumulatedSuspendedTickChangedEvent(OutCopyHandle<Kernel::KReadableEvent> out_event);