diff --git a/sdk/xtdk/amd64/hlfuncs.h b/sdk/xtdk/amd64/hlfuncs.h
index 83072144..ccdcc6d7 100644
--- a/sdk/xtdk/amd64/hlfuncs.h
+++ b/sdk/xtdk/amd64/hlfuncs.h
@@ -66,7 +66,7 @@ HlLoadGlobalDescriptorTable(IN PVOID Source);
 XTCDECL
 VOID
 HlLoadSegment(IN USHORT Segment,
-              IN PVOID Source);
+              IN ULONG Source);
 
 XTCDECL
 VOID
diff --git a/sdk/xtdk/i686/hlfuncs.h b/sdk/xtdk/i686/hlfuncs.h
index 70ed65fb..c7d08772 100644
--- a/sdk/xtdk/i686/hlfuncs.h
+++ b/sdk/xtdk/i686/hlfuncs.h
@@ -66,7 +66,7 @@ HlLoadGlobalDescriptorTable(IN PVOID Source);
 XTCDECL
 VOID
 HlLoadSegment(IN USHORT Segment,
-              IN PVOID Source);
+              IN ULONG Source);
 
 XTCDECL
 VOID
diff --git a/xtoskrnl/hl/amd64/cpufunc.c b/xtoskrnl/hl/amd64/cpufunc.c
index 65ff3652..562b0d6a 100644
--- a/xtoskrnl/hl/amd64/cpufunc.c
+++ b/xtoskrnl/hl/amd64/cpufunc.c
@@ -272,7 +272,7 @@ HlLoadGlobalDescriptorTable(IN PVOID Source)
 XTCDECL
 VOID
 HlLoadSegment(IN USHORT Segment,
-              IN PVOID Source)
+              IN ULONG Source)
 {
     switch(Segment)
     {
diff --git a/xtoskrnl/hl/i686/cpufunc.c b/xtoskrnl/hl/i686/cpufunc.c
index b1c25186..6b86b00c 100644
--- a/xtoskrnl/hl/i686/cpufunc.c
+++ b/xtoskrnl/hl/i686/cpufunc.c
@@ -272,7 +272,7 @@ HlLoadGlobalDescriptorTable(IN PVOID Source)
 XTCDECL
 VOID
 HlLoadSegment(IN USHORT Segment,
-              IN PVOID Source)
+              IN ULONG Source)
 {
     switch(Segment)
     {