diff --git a/reactos/ntoskrnl/ke/i386/gdt.c b/reactos/ntoskrnl/ke/i386/gdt.c
index 85982205832..ac06f5c1b22 100644
--- a/reactos/ntoskrnl/ke/i386/gdt.c
+++ b/reactos/ntoskrnl/ke/i386/gdt.c
@@ -134,7 +134,7 @@ KiInitializeGdt(PKPCR Pcr)
 	   "movl %1, %%fs\n\t"
 	   "movl %0, %%gs\n\t"
 	   : /* no output */
-	   : "a" (KERNEL_DS), "b" (PCR_SELECTOR));
+	   : "a" (KERNEL_DS), "d" (PCR_SELECTOR));
   __asm__ ("pushl %0\n\t"
 	   "pushl $.l4\n\t"
 	   "lret\n\t"
@@ -146,10 +146,10 @@ KiInitializeGdt(PKPCR Pcr)
   {
     lgdt Descriptor;
     mov ax, KERNEL_DS;
-    mov bx, PCR_SELECTOR;
+    mov dx, PCR_SELECTOR;
     mov ds, ax;
     mov es, ax;
-    mov fs, bx;
+    mov fs, dx;
     mov gs, ax;
     push KERNEL_CS;
     push offset l4 ;
@@ -207,13 +207,14 @@ KeSetBaseGdtSelector(ULONG Entry,
 		     PVOID Base)
 {
    KIRQL oldIrql;
-   PUSHORT Gdt = KeGetCurrentKPCR()->GDT;
+   PUSHORT Gdt;
    
    DPRINT("KeSetBaseGdtSelector(Entry %x, Base %x)\n",
 	   Entry, Base);
    
    KeAcquireSpinLock(&GdtLock, &oldIrql);
    
+   Gdt = KeGetCurrentKPCR()->GDT;
    Entry = (Entry & (~0x3)) / 2;
    
    Gdt[Entry + 1] = (USHORT)(((ULONG)Base) & 0xffff);
@@ -241,13 +242,14 @@ KeSetGdtSelector(ULONG Entry,
                  ULONG Value2)
 {
    KIRQL oldIrql;
-   PULONG Gdt = (PULONG) KeGetCurrentKPCR()->GDT;
+   PULONG Gdt; 
    
    DPRINT("KeSetGdtSelector(Entry %x, Value1 %x, Value2 %x)\n",
 	   Entry, Value1, Value2);
    
    KeAcquireSpinLock(&GdtLock, &oldIrql);
    
+   Gdt = (PULONG) KeGetCurrentKPCR()->GDT;;
    Entry = (Entry & (~0x3)) / 4;
 
    Gdt[Entry] = Value1;