diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 50bf0caa..60f506f7 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -96,7 +96,7 @@ int apic_calibration(void)
 	
 	apic_write(lapic+APIC_DCR, 0xB);	// set it to 1 clock increments
 	apic_write(lapic+APIC_LVT_T, 0x20030);	// connects the timer to 48 and enables it
-	apic_write(lapic+APIC_ICR), 0xFFFFFFFF);
+	apic_write(lapic+APIC_ICR, 0xFFFFFFFF);
 
 	/* wait 3 time slices to determine a ICR */
 	while(get_clock_tick() - ticks < 3)