diff --git a/ccid_host/ccid_slot_sim.c b/ccid_host/ccid_slot_sim.c
index 1bd514a..dc33114 100644
--- a/ccid_host/ccid_slot_sim.c
+++ b/ccid_host/ccid_slot_sim.c
@@ -100,9 +100,10 @@
 {
 	if (enable) {
 		cs->icc_powered = true;
-		/* FIXME: What to do about ATR? */
+		cs->icc_in_reset = false;
 	} else {
 		cs->icc_powered = false;
+		cs->icc_in_reset = true;
 	}
 }