diff --git a/reactos/hal/halx86/mp/ioapic.c b/reactos/hal/halx86/mp/ioapic.c
index af1b39c5cb9..ac331e167f3 100644
--- a/reactos/hal/halx86/mp/ioapic.c
+++ b/reactos/hal/halx86/mp/ioapic.c
@@ -10,8 +10,8 @@
 /* INCLUDES *****************************************************************/
 
 #include <hal.h>
-#define NDEBUG
-#include <debug.h>
+#define NDEBUG
+#include <debug.h>
 
 /* GLOBALS *****************************************************************/
 
@@ -319,7 +319,7 @@ IOAPICSetupIrqs(VOID)
          entry.dest.logical.logical_dest = 0;
 
 	 idx = IOAPICGetIrqEntry(apic,pin,INT_VECTORED);
-	 if (idx == -1) 
+	 if (idx == (ULONG)-1)
 	 {
 	    if (first_notcon) 
 	    {
diff --git a/reactos/hal/halx86/mp/mpconfig.c b/reactos/hal/halx86/mp/mpconfig.c
index 9911e365949..b10356e36a3 100644
--- a/reactos/hal/halx86/mp/mpconfig.c
+++ b/reactos/hal/halx86/mp/mpconfig.c
@@ -10,8 +10,8 @@
 /* INCLUDES *****************************************************************/
 
 #include <hal.h>
-#define NDEBUG
-#include <debug.h>
+#define NDEBUG
+#include <debug.h>
 
 /* GLOBALS ******************************************************************/
 
@@ -302,7 +302,7 @@ HaliReadMPConfigTable(PMP_CONFIGURATION_TABLE Table)
    DPRINT("APIC at: %08x\n", Table->LocalAPICAddress);
 
 
-   Entry = (PUCHAR)((PVOID)Table + sizeof(MP_CONFIGURATION_TABLE));
+   Entry = (PUCHAR)((ULONG_PTR)Table + sizeof(MP_CONFIGURATION_TABLE));
    Count = 0;
    while (Count < (Table->Length - sizeof(MP_CONFIGURATION_TABLE)))
    {