diff --git a/hw/apic.c b/hw/apic.c
index a2915f8121..626f72fd0e 100644
--- a/hw/apic.c
+++ b/hw/apic.c
@@ -105,12 +105,6 @@ static void apic_init_ipi(APICState *s);
 static void apic_set_irq(APICState *s, int vector_num, int trigger_mode);
 static void apic_update_irq(APICState *s);
 
-/* Find first bit starting from msb */
-static int fls_bit(uint32_t value)
-{
-    return 31 - clz32(value);
-}
-
 /* Find first bit starting from lsb */
 static int ffs_bit(uint32_t value)
 {
@@ -306,7 +300,7 @@ static int get_highest_priority_int(uint32_t *tab)
     int i;
     for(i = 7; i >= 0; i--) {
         if (tab[i] != 0) {
-            return i * 32 + fls_bit(tab[i]);
+            return i * 32 + fls(tab[i]);
         }
     }
     return -1;