diff --git a/reactos/drivers/bus/pci/pci.c b/reactos/drivers/bus/pci/pci.c
index 504ed5a1680..a10bed78303 100644
--- a/reactos/drivers/bus/pci/pci.c
+++ b/reactos/drivers/bus/pci/pci.c
@@ -452,7 +452,7 @@ PciCreateDeviceDescriptionString(PUNICODE_STRING DeviceDescription,
           Description = L"XGA display controller";
           break;
 
-        case PCI_SUBLCASS_VID_3D_CTLR:
+        case PCI_SUBCLASS_VID_3D_CTLR:
           Description = L"Multimedia display controller";
           break;
 
diff --git a/reactos/include/ddk/winddk.h b/reactos/include/ddk/winddk.h
index 6092d6e6085..ddef89321ee 100644
--- a/reactos/include/ddk/winddk.h
+++ b/reactos/include/ddk/winddk.h
@@ -4123,7 +4123,7 @@ typedef struct _PCI_COMMON_CONFIG {
 
 #define PCI_SUBCLASS_VID_VGA_CTLR           0x00
 #define PCI_SUBCLASS_VID_XGA_CTLR           0x01
-#define PCI_SUBLCASS_VID_3D_CTLR            0x02
+#define PCI_SUBCLASS_VID_3D_CTLR            0x02
 #define PCI_SUBCLASS_VID_OTHER              0x80
 
 /* PCI device subclasses for class 4 (multimedia device)*/
@@ -9365,7 +9365,7 @@ KeLowerIrql(
   IN KIRQL  NewIrql);
 
 NTKERNELAPI
-KIRQL
+VOID
 NTAPI
 KeRaiseIrql(
   IN KIRQL  NewIrql,