diff --git a/reactos/drivers/network/tcpip/include/memtrack.h b/reactos/drivers/network/tcpip/include/memtrack.h
index 8157338a0b6..37a736add2a 100644
--- a/reactos/drivers/network/tcpip/include/memtrack.h
+++ b/reactos/drivers/network/tcpip/include/memtrack.h
@@ -25,20 +25,20 @@
 
 typedef struct _ALLOCATION_TRACKER {
     LIST_ENTRY Entry;
-    ULONG Tag;
+    DWORD Tag;
     PVOID Thing;
     PCHAR FileName;
-    ULONG LineNo;
+    DWORD LineNo;
 } ALLOCATION_TRACKER, *PALLOCATION_TRACKER;
 
 VOID TrackingInit();
-VOID TrackWithTag( ULONG Tag, PVOID Thing, PCHAR File, ULONG Line );
+VOID TrackWithTag( DWORD Tag, PVOID Thing, PCHAR File, DWORD Line );
 #define Track(Tag,Thing) TrackWithTag(Tag,Thing,__FILE__,__LINE__)
-VOID UntrackFL( PCHAR File, ULONG Line, PVOID Thing, ULONG Tag );
+VOID UntrackFL( PCHAR File, DWORD Line, PVOID Thing, DWORD Tag );
 #define Untrack(Thing) UntrackFL(__FILE__,__LINE__,Thing)
-VOID TrackDumpFL( PCHAR File, ULONG Line );
+VOID TrackDumpFL( PCHAR File, DWORD Line );
 #define TrackDump() TrackDumpFL(__FILE__,__LINE__)
-VOID TrackTag( ULONG Tag );
+VOID TrackTag( DWORD Tag );
 
 static __inline PVOID ExAllocateFromNPagedLookasideListX( PNPAGED_LOOKASIDE_LIST List, PCHAR File, ULONG Line ) {
     PVOID Out = ExAllocateFromNPagedLookasideList( List );
diff --git a/reactos/drivers/network/tcpip/include/precomp.h b/reactos/drivers/network/tcpip/include/precomp.h
index 82e15cef80a..69fefd41f98 100644
--- a/reactos/drivers/network/tcpip/include/precomp.h
+++ b/reactos/drivers/network/tcpip/include/precomp.h
@@ -1,5 +1,6 @@
 #include <limits.h>
 #include <ntddk.h>
+#include <windef.h>
 #include <ntifs.h>
 #include <tdi.h>
 #include <tdistat.h>
diff --git a/reactos/lib/drivers/ip/network/memtrack.c b/reactos/lib/drivers/ip/network/memtrack.c
index f6e941da474..d12d148c3b0 100644
--- a/reactos/lib/drivers/ip/network/memtrack.c
+++ b/reactos/lib/drivers/ip/network/memtrack.c
@@ -8,9 +8,9 @@
 static LIST_ENTRY AllocatedObjectsList;
 static KSPIN_LOCK AllocatedObjectsLock;
 static NPAGED_LOOKASIDE_LIST AllocatedObjectsLookasideList;
-ULONG TagsToShow[MEMTRACK_MAX_TAGS_TO_TRACK] = { 0 };
+DWORD TagsToShow[MEMTRACK_MAX_TAGS_TO_TRACK] = { 0 };
 
-VOID TrackTag( ULONG Tag ) {
+VOID TrackTag( DWORD Tag ) {
     UINT i;
 
     for( i = 0; TagsToShow[i]; i++ );
@@ -58,7 +58,7 @@ VOID ShowTrackedThing( PCHAR What, PALLOCATION_TRACKER Thing, BOOLEAN ForceShow
     }
 }
 
-VOID TrackWithTag( ULONG Tag, PVOID Thing, PCHAR FileName, ULONG LineNo ) {
+VOID TrackWithTag( DWORD Tag, PVOID Thing, PCHAR FileName, DWORD LineNo ) {
     PALLOCATION_TRACKER TrackedThing =
         ExAllocateFromNPagedLookasideList( &AllocatedObjectsLookasideList );
 
@@ -104,7 +104,7 @@ VOID TrackWithTag( ULONG Tag, PVOID Thing, PCHAR FileName, ULONG LineNo ) {
     /*TrackDumpFL( FileName, LineNo );*/
 }
 
-BOOLEAN ShowTag( ULONG Tag ) {
+BOOLEAN ShowTag( DWORD Tag ) {
     UINT i;
 
     for( i = 0; TagsToShow[i] && TagsToShow[i] != Tag; i++ );
@@ -112,7 +112,7 @@ BOOLEAN ShowTag( ULONG Tag ) {
     return TagsToShow[i] ? TRUE : FALSE;
 }
 
-VOID UntrackFL( PCHAR File, ULONG Line, PVOID Thing, ULONG Tag ) {
+VOID UntrackFL( PCHAR File, DWORD Line, PVOID Thing, DWORD Tag ) {
     KIRQL OldIrql;
     PLIST_ENTRY Entry;
     PALLOCATION_TRACKER ThingInList;
@@ -147,7 +147,7 @@ VOID UntrackFL( PCHAR File, ULONG Line, PVOID Thing, ULONG Tag ) {
     TcpipBugCheck( 0 );
 }
 
-VOID TrackDumpFL( PCHAR File, ULONG Line ) {
+VOID TrackDumpFL( PCHAR File, DWORD Line ) {
     KIRQL OldIrql;
     PLIST_ENTRY Entry;
     PALLOCATION_TRACKER Thing;