diff --git a/sys/dev/acpica/acpi_ec.c b/sys/dev/acpica/acpi_ec.c
index 96da6d351d46..cfb2239ec0da 100644
--- a/sys/dev/acpica/acpi_ec.c
+++ b/sys/dev/acpica/acpi_ec.c
@@ -618,7 +618,9 @@ EcWaitEventIntr(struct acpi_ec_softc *sc, EC_EVENT Event)
     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, (UINT32)Event);
 
     /* XXX this should test whether interrupts are available some other way */
+#ifdef ACPI_EC_EVENT_DRIVEN
     if(cold)
+#endif
 	return_ACPI_STATUS(EcWaitEvent(sc, Event));
 
     if (!EcIsLocked(sc))