diff --git a/reactos/ntoskrnl/include/internal/amd64/intrin_i.h b/reactos/ntoskrnl/include/internal/amd64/intrin_i.h
index a09c4acdc31..908d2eea9a7 100644
--- a/reactos/ntoskrnl/include/internal/amd64/intrin_i.h
+++ b/reactos/ntoskrnl/include/internal/amd64/intrin_i.h
@@ -48,8 +48,8 @@
     : /* no outputs */ \
     : "m" (X));
 
-#define Ke386SaveFlags(x)        __asm__ __volatile__("pushfl ; popl %0":"=g" (x): /* no input */)
-#define Ke386RestoreFlags(x)     __asm__ __volatile__("pushl %0 ; popfl": /* no output */ :"g" (x):"memory")
+#define Ke386SaveFlags(x)        __asm__ __volatile__("pushfq ; popq %0":"=g" (x): /* no input */)
+#define Ke386RestoreFlags(x)     __asm__ __volatile__("pushq %0 ; popfq": /* no output */ :"g" (x):"memory")
 
 #define _Ke386GetSeg(N)           ({ \
                                      unsigned int __d; \
diff --git a/reactos/ntoskrnl/include/internal/amd64/ke.h b/reactos/ntoskrnl/include/internal/amd64/ke.h
index 39cbbfc21ef..42a5a353ae5 100644
--- a/reactos/ntoskrnl/include/internal/amd64/ke.h
+++ b/reactos/ntoskrnl/include/internal/amd64/ke.h
@@ -54,7 +54,7 @@ typedef struct _KIDT_INIT
 {
     UCHAR InterruptId;
     UCHAR Dpl;
-    UCHAR Type;
+    UCHAR IstIndex;
     PVOID ServiceRoutine;
 } KIDT_INIT, *PKIDT_INIT;
 
diff --git a/reactos/ntoskrnl/ke/amd64/except.c b/reactos/ntoskrnl/ke/amd64/except.c
index 1de3a70a6b6..c21905471be 100644
--- a/reactos/ntoskrnl/ke/amd64/except.c
+++ b/reactos/ntoskrnl/ke/amd64/except.c
@@ -42,7 +42,7 @@ KIDT_INIT KiInterruptInitTable[] =
     {0x2D, 0x03, 0x00, KiDebugServiceTrap},
     {0x2F, 0x00, 0x00, KiDpcInterrupt},
     {0xE1, 0x00, 0x00, KiIpiInterrupt},
-    {0, 0}
+    {0, 0, 0, 0}
 };
 
 KIDTENTRY64 KiIdt[256];
@@ -68,17 +68,18 @@ KeInitExceptions(VOID)
         {
             Offset = (ULONG64)KiInterruptInitTable[j].ServiceRoutine;
             KiIdt[i].Dpl = KiInterruptInitTable[j].Dpl;
+            KiIdt[i].IstIndex = KiInterruptInitTable[j].IstIndex;
             j++;
         }
         else
         {
             Offset = (ULONG64)KiUnexpectedInterrupt;
             KiIdt[i].Dpl = 0;
+            KiIdt[i].IstIndex = 0;
         }
         KiIdt[i].OffsetLow = Offset & 0xffff;
         KiIdt[i].Selector = KGDT_64_R0_CODE;
         KiIdt[i].Type = 0x0e;
-        KiIdt[i].IstIndex = 0;
         KiIdt[i].Reserved0 = 0;
         KiIdt[i].Present = 1;
         KiIdt[i].OffsetMiddle = (Offset >> 16) & 0xffff;