diff --git a/Kernel/Devices/Audio/AC97.cpp b/Kernel/Devices/Audio/AC97.cpp
index 507efdafa2f..f16ddc82c37 100644
--- a/Kernel/Devices/Audio/AC97.cpp
+++ b/Kernel/Devices/Audio/AC97.cpp
@@ -44,7 +44,7 @@ UNMAP_AFTER_INIT void AC97::detect()
     });
 }
 
-UNMAP_AFTER_INIT AC97::AC97(PCI::DeviceIdentifier pci_device_identifier)
+UNMAP_AFTER_INIT AC97::AC97(PCI::DeviceIdentifier const& pci_device_identifier)
     : PCI::Device(pci_device_identifier.address())
     , IRQHandler(pci_device_identifier.interrupt_line().value())
     , CharacterDevice(42, 42)
diff --git a/Kernel/Devices/Audio/AC97.h b/Kernel/Devices/Audio/AC97.h
index af5ca5c3897..aae4c7dc581 100644
--- a/Kernel/Devices/Audio/AC97.h
+++ b/Kernel/Devices/Audio/AC97.h
@@ -145,7 +145,7 @@ private:
         StringView m_name;
     };
 
-    AC97(PCI::DeviceIdentifier);
+    explicit AC97(PCI::DeviceIdentifier const&);
 
     // ^IRQHandler
     virtual bool handle_irq(const RegisterState&) override;