diff --git a/ntoskrnl/ke/arm/kiinit.c b/ntoskrnl/ke/arm/kiinit.c
index 86db2d9377f..34413f17a57 100644
--- a/ntoskrnl/ke/arm/kiinit.c
+++ b/ntoskrnl/ke/arm/kiinit.c
@@ -101,7 +101,7 @@ KiInitializeKernel(IN PKPROCESS InitProcess,
         PageDirectory[1] = 0;
         KeInitializeProcess(InitProcess,
                             0,
-                            0xFFFFFFFF,
+                            MAXULONG_PTR,
                             PageDirectory,
                             FALSE);
         InitProcess->QuantumReset = MAXCHAR;
diff --git a/ntoskrnl/ke/i386/kiinit.c b/ntoskrnl/ke/i386/kiinit.c
index 2620885156a..e3ec9ed94bf 100644
--- a/ntoskrnl/ke/i386/kiinit.c
+++ b/ntoskrnl/ke/i386/kiinit.c
@@ -527,7 +527,7 @@ KiInitializeKernel(IN PKPROCESS InitProcess,
         PageDirectory[1] = 0;
         KeInitializeProcess(InitProcess,
                             0,
-                            0xFFFFFFFF,
+                            MAXULONG_PTR,
                             PageDirectory,
                             FALSE);
         InitProcess->QuantumReset = MAXCHAR;