diff --git a/sys/amd64/acpica/acpi_machdep.c b/sys/amd64/acpica/acpi_machdep.c
index 228c4b7a477..76e2e92e97c 100644
--- a/sys/amd64/acpica/acpi_machdep.c
+++ b/sys/amd64/acpica/acpi_machdep.c
@@ -330,6 +330,9 @@ acpi_machdep_init(device_t dev)
 
 	acpi_install_wakeup_handler(sc);
 
+#ifdef APIC_IO
+	acpi_SetIntrModel(ACPI_INTR_APIC);
+#endif
 	return (0);
 }
 
diff --git a/sys/i386/acpica/acpi_machdep.c b/sys/i386/acpica/acpi_machdep.c
index 228c4b7a477..76e2e92e97c 100644
--- a/sys/i386/acpica/acpi_machdep.c
+++ b/sys/i386/acpica/acpi_machdep.c
@@ -330,6 +330,9 @@ acpi_machdep_init(device_t dev)
 
 	acpi_install_wakeup_handler(sc);
 
+#ifdef APIC_IO
+	acpi_SetIntrModel(ACPI_INTR_APIC);
+#endif
 	return (0);
 }