diff --git a/IntelUndiPkg/GigUndiDxe/AdapterInformation.c b/IntelUndiPkg/GigUndiDxe/AdapterInformation.c
index b0320b11839b..8918c538e447 100644
--- a/IntelUndiPkg/GigUndiDxe/AdapterInformation.c
+++ b/IntelUndiPkg/GigUndiDxe/AdapterInformation.c
@@ -28,7 +28,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ***************************************************************************/
 #include "Uefi.h"
 
-#include "E1000.h"
+#include "e1000.h"
 
 
 #include "AdapterInformation.h"
diff --git a/IntelUndiPkg/GigUndiDxe/ComponentName.c b/IntelUndiPkg/GigUndiDxe/ComponentName.c
index 1473bfbed0af..70baf00f4a5d 100644
--- a/IntelUndiPkg/GigUndiDxe/ComponentName.c
+++ b/IntelUndiPkg/GigUndiDxe/ComponentName.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 
 #include "ComponentName.h"
 #include "DeviceSupport.h"
diff --git a/IntelUndiPkg/GigUndiDxe/Decode.c b/IntelUndiPkg/GigUndiDxe/Decode.c
index 88e8be315bd1..14060db0d050 100644
--- a/IntelUndiPkg/GigUndiDxe/Decode.c
+++ b/IntelUndiPkg/GigUndiDxe/Decode.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 #include <Uefi\UEfiPxe.h>
 
 /** This routine determines the operational state of the UNDI.  It updates the state flags in the
diff --git a/IntelUndiPkg/GigUndiDxe/DeviceSupport.h b/IntelUndiPkg/GigUndiDxe/DeviceSupport.h
index f309044d9b9d..e156b587f6a7 100644
--- a/IntelUndiPkg/GigUndiDxe/DeviceSupport.h
+++ b/IntelUndiPkg/GigUndiDxe/DeviceSupport.h
@@ -29,7 +29,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef DEVICE_SUPPORT_H_
 #define DEVICE_SUPPORT_H_
 
-#include "E1000.h"
+#include "e1000.h"
 
 typedef struct BRAND_STRUCT_S BRAND_STRUCT;
 
diff --git a/IntelUndiPkg/GigUndiDxe/Dma.c b/IntelUndiPkg/GigUndiDxe/Dma.c
index 76a3fcf69601..bf94c1e2fd54 100644
--- a/IntelUndiPkg/GigUndiDxe/Dma.c
+++ b/IntelUndiPkg/GigUndiDxe/Dma.c
@@ -27,7 +27,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
 
-#include "E1000.h"
+#include "e1000.h"
 
 #include "Dma.h"
 
diff --git a/IntelUndiPkg/GigUndiDxe/DriverConfiguration.c b/IntelUndiPkg/GigUndiDxe/DriverConfiguration.c
index 118c1b2b9b04..20d40ab672ef 100644
--- a/IntelUndiPkg/GigUndiDxe/DriverConfiguration.c
+++ b/IntelUndiPkg/GigUndiDxe/DriverConfiguration.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 #include "DriverConfiguration.h"
   
 /* Protocol structure tentative definition */  
diff --git a/IntelUndiPkg/GigUndiDxe/DriverDiagnostics.c b/IntelUndiPkg/GigUndiDxe/DriverDiagnostics.c
index a9f176ce5324..559f2133281e 100644
--- a/IntelUndiPkg/GigUndiDxe/DriverDiagnostics.c
+++ b/IntelUndiPkg/GigUndiDxe/DriverDiagnostics.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 #include "DriverDiagnostics.h"
 
 /* Protocol structures tentative definitions */
diff --git a/IntelUndiPkg/GigUndiDxe/DriverHealth.c b/IntelUndiPkg/GigUndiDxe/DriverHealth.c
index b1af371e06db..b5b7db5fd814 100644
--- a/IntelUndiPkg/GigUndiDxe/DriverHealth.c
+++ b/IntelUndiPkg/GigUndiDxe/DriverHealth.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 
 
 /** Retrieves the health status of a controller in the platform. 
diff --git a/IntelUndiPkg/GigUndiDxe/EepromConfig.h b/IntelUndiPkg/GigUndiDxe/EepromConfig.h
index e0d31f6a151d..272292d107e1 100644
--- a/IntelUndiPkg/GigUndiDxe/EepromConfig.h
+++ b/IntelUndiPkg/GigUndiDxe/EepromConfig.h
@@ -29,7 +29,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef EEPROM_CONFIG_H_
 #define EEPROM_CONFIG_H_
 
-#include "E1000.h"
+#include "e1000.h"
 
 // EEPROM power management bit definitions
 #define E1000_INIT_CONTROL_WORD1          0x0A
diff --git a/IntelUndiPkg/GigUndiDxe/GigUndiDxe.inf b/IntelUndiPkg/GigUndiDxe/GigUndiDxe.inf
index 2d2d0707a686..0e4462733df6 100644
--- a/IntelUndiPkg/GigUndiDxe/GigUndiDxe.inf
+++ b/IntelUndiPkg/GigUndiDxe/GigUndiDxe.inf
@@ -72,8 +72,8 @@ DriverConfiguration.c
 DriverConfiguration.h
 DriverDiagnostics.c
 DriverDiagnostics.h
-E1000.h
-E1000.c
+e1000.h
+e1000.c
 e1000_80003es2lan.h
 e1000_80003es2lan.c
 e1000_82571.h
@@ -92,8 +92,8 @@ e1000_manage.h
 e1000_manage.c
 e1000_nvm.h
 e1000_nvm.c
-E1000_osdep.h
-E1000_osdep.c
+e1000_osdep.h
+e1000_osdep.c
 e1000_phy.h
 e1000_phy.c
 e1000_regs.h
diff --git a/IntelUndiPkg/GigUndiDxe/Init.c b/IntelUndiPkg/GigUndiDxe/Init.c
index 47ed03eb0849..74b933674589 100644
--- a/IntelUndiPkg/GigUndiDxe/Init.c
+++ b/IntelUndiPkg/GigUndiDxe/Init.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 #include "Init.h"
 #include "DeviceSupport.h"
 #include "Decode.h"
diff --git a/IntelUndiPkg/GigUndiDxe/StartStop.c b/IntelUndiPkg/GigUndiDxe/StartStop.c
index 10ab4e51bf44..32bed7ce288d 100644
--- a/IntelUndiPkg/GigUndiDxe/StartStop.c
+++ b/IntelUndiPkg/GigUndiDxe/StartStop.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 #include "StartStop.h"
 
 EFI_GUID gEfiStartStopProtocolGuid = EFI_DRIVER_STOP_PROTOCOL_GUID;
diff --git a/IntelUndiPkg/GigUndiDxe/StartStop.h b/IntelUndiPkg/GigUndiDxe/StartStop.h
index 24304d6cc3a7..255f17aabaa4 100644
--- a/IntelUndiPkg/GigUndiDxe/StartStop.h
+++ b/IntelUndiPkg/GigUndiDxe/StartStop.h
@@ -29,7 +29,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef START_STOP_H_
 #define START_STOP_H_
 
-#include "E1000.h"
+#include "e1000.h"
 
 #define EFI_DRIVER_STOP_PROTOCOL_GUID \
 { 0x34d59603, 0x1428, 0x4429, 0xa4, 0x14, 0xe6, 0xb3, \
diff --git a/IntelUndiPkg/GigUndiDxe/E1000.c b/IntelUndiPkg/GigUndiDxe/e1000.c
similarity index 99%
rename from IntelUndiPkg/GigUndiDxe/E1000.c
rename to IntelUndiPkg/GigUndiDxe/e1000.c
index fad20d988441..6f8529abf046 100644
--- a/IntelUndiPkg/GigUndiDxe/E1000.c
+++ b/IntelUndiPkg/GigUndiDxe/e1000.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 #include "DeviceSupport.h"
 
 
diff --git a/IntelUndiPkg/GigUndiDxe/E1000.h b/IntelUndiPkg/GigUndiDxe/e1000.h
similarity index 100%
rename from IntelUndiPkg/GigUndiDxe/E1000.h
rename to IntelUndiPkg/GigUndiDxe/e1000.h
diff --git a/IntelUndiPkg/GigUndiDxe/E1000_osdep.c b/IntelUndiPkg/GigUndiDxe/e1000_osdep.c
similarity index 99%
rename from IntelUndiPkg/GigUndiDxe/E1000_osdep.c
rename to IntelUndiPkg/GigUndiDxe/e1000_osdep.c
index 0d0047a93048..3aa18e735dee 100644
--- a/IntelUndiPkg/GigUndiDxe/E1000_osdep.c
+++ b/IntelUndiPkg/GigUndiDxe/e1000_osdep.c
@@ -26,7 +26,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
-#include "E1000.h"
+#include "e1000.h"
 
 /** Reads from the PCI capabality region.
 
diff --git a/IntelUndiPkg/GigUndiDxe/E1000_osdep.h b/IntelUndiPkg/GigUndiDxe/e1000_osdep.h
similarity index 100%
rename from IntelUndiPkg/GigUndiDxe/E1000_osdep.h
rename to IntelUndiPkg/GigUndiDxe/e1000_osdep.h
diff --git a/IntelUndiPkg/GigUndiDxe/wol/wolimpl.h b/IntelUndiPkg/GigUndiDxe/wol/wolimpl.h
index ed2ffc427093..ec67d000e9ae 100644
--- a/IntelUndiPkg/GigUndiDxe/wol/wolimpl.h
+++ b/IntelUndiPkg/GigUndiDxe/wol/wolimpl.h
@@ -29,7 +29,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef __WOLIMPL_H
 #define __WOLIMPL_H
 
-#include <E1000.h>
+#include <e1000.h>
 #define WOL_1G    2
 
 typedef UNDI_PRIVATE_DATA *WOL_ADAPTER_HANDLE_TYPE;
