diff --git a/Kernel/PCI/Device.cpp b/Kernel/PCI/Device.cpp
index 4a8e096b7a7..faa45b3ff78 100644
--- a/Kernel/PCI/Device.cpp
+++ b/Kernel/PCI/Device.cpp
@@ -26,15 +26,16 @@
 
 #include <Kernel/PCI/Device.h>
 
+namespace Kernel {
 PCI::Device::Device(PCI::Address address)
-    : InterruptHandler(PCI::get_interrupt_line(address))
+    : IRQHandler(PCI::get_interrupt_line(address))
     , m_pci_address(address)
 {
     // FIXME: Register PCI device somewhere...
 }
 
 PCI::Device::Device(PCI::Address address, u8 interrupt_vector)
-    : InterruptHandler(interrupt_vector)
+    : IRQHandler(interrupt_vector)
     , m_pci_address(address)
 {
     // FIXME: Register PCI device somewhere...
@@ -44,3 +45,4 @@ PCI::Device::~Device()
 {
     // FIXME: Unregister the device
 }
+}
diff --git a/Kernel/PCI/Device.h b/Kernel/PCI/Device.h
index edcc435407f..22fce33e5d4 100644
--- a/Kernel/PCI/Device.h
+++ b/Kernel/PCI/Device.h
@@ -27,10 +27,11 @@
 #pragma once
 
 #include <AK/Types.h>
-#include <Kernel/InterruptHandler.h>
+#include <Kernel/Interrupts/IRQHandler.h>
 #include <Kernel/PCI/Definitions.h>
 
-class PCI::Device : public InterruptHandler {
+namespace Kernel {
+class PCI::Device : public IRQHandler {
 public:
     Address get_pci_address() const { return m_pci_address; };
 
@@ -42,3 +43,4 @@ protected:
 private:
     Address m_pci_address;
 };
+}