Index: kernel/arch/ia32/src/smp/apic.c
===================================================================
--- kernel/arch/ia32/src/smp/apic.c	(revision 99718a2ecc5019b587210e9cffa467236e5f2131)
+++ kernel/arch/ia32/src/smp/apic.c	(revision 96b89acbc219cb8e0be1fe55c5d2b9e4a2ec9762)
@@ -72,6 +72,6 @@
  *
  */
-volatile uint32_t *l_apic = (uint32_t *) 0xfee00000;
-volatile uint32_t *io_apic = (uint32_t *) 0xfec00000;
+volatile uint32_t *l_apic = (uint32_t *) UINT32_C(0xfee00000);
+volatile uint32_t *io_apic = (uint32_t *) UINT32_C(0xfec00000);
 
 uint32_t apic_id_mask = 0;
@@ -184,5 +184,5 @@
 	 * Other interrupts will be forwarded to the lowest priority CPU.
 	 */
-	io_apic_disable_irqs(0xffff);
+	io_apic_disable_irqs(0xffffU);
 	
 	irq_initialize(&l_apic_timer_irq);
Index: kernel/arch/ia32/src/smp/mps.c
===================================================================
--- kernel/arch/ia32/src/smp/mps.c	(revision 99718a2ecc5019b587210e9cffa467236e5f2131)
+++ kernel/arch/ia32/src/smp/mps.c	(revision 96b89acbc219cb8e0be1fe55c5d2b9e4a2ec9762)
@@ -52,6 +52,6 @@
  */
 
-#define FS_SIGNATURE  0x5f504d5f
-#define CT_SIGNATURE  0x504d4350
+#define FS_SIGNATURE  UINT32_C(0x5f504d5f)
+#define CT_SIGNATURE  UINT32_C(0x504d4350)
 
 static struct mps_fs *fs;