diff --git a/sections/cper-section-pci-dev.h b/sections/cper-section-pci-dev.h
index 43d36ea..02c6b4f 100644
--- a/sections/cper-section-pci-dev.h
+++ b/sections/cper-section-pci-dev.h
@@ -11,14 +11,14 @@
 /// PCI/PCI-X Device Error Section
 ///
 typedef struct {
-  UINT64 VendorId : 2;
-  UINT64 DeviceId : 2;
-  UINT64 ClassCode : 3;
-  UINT64 FunctionNumber : 1;
-  UINT64 DeviceNumber : 1;
-  UINT64 BusNumber : 1;
-  UINT64 SegmentNumber : 1;
-  UINT64 Reserved : 5;
+  UINT64 VendorId : 16;
+  UINT64 DeviceId : 16;
+  UINT64 ClassCode : 24;
+  UINT64 FunctionNumber : 8;
+  UINT64 DeviceNumber : 8;
+  UINT64 BusNumber : 8;
+  UINT64 SegmentNumber : 8;
+  UINT64 Reserved : 40;
 } EFI_PCI_PCIX_DEVICE_ID_INFO;
 
 typedef struct {