diff --git a/Kernel/Devices/PCISerialDevice.cpp b/Kernel/Devices/PCISerialDevice.cpp
index 97424bc1e5..8e3449ec59 100644
--- a/Kernel/Devices/PCISerialDevice.cpp
+++ b/Kernel/Devices/PCISerialDevice.cpp
@@ -10,7 +10,7 @@ namespace Kernel {
 
 static SerialDevice* s_the = nullptr;
 
-void PCISerialDevice::detect()
+UNMAP_AFTER_INIT void PCISerialDevice::detect()
 {
     size_t current_device_minor = 68;
     PCI::enumerate([&](const PCI::Address& address, PCI::ID id) {