diff --git a/firmware/libcommon/source/card_emu.c b/firmware/libcommon/source/card_emu.c
index c3299de0..34fac1b0 100644
--- a/firmware/libcommon/source/card_emu.c
+++ b/firmware/libcommon/source/card_emu.c
@@ -426,13 +426,6 @@ static void card_set_state(struct card_handle *ch,
 	case ISO_S_WAIT_RST:
 		/* disable Rx and Tx of UART */
 		card_emu_uart_enable(ch->uart_chan, 0);
-		/* check end activation state (only necessary if the reader to not respect the activation sequence) */
-		if (ch->vcc_active && ch->clocked && !ch->in_reset) {
-			/* enable the TC/ETU counter once reset has been released */
-			tc_etu_enable(ch->tc_chan);
-			/* prepare to send the ATR */
-			card_set_state(ch, ISO_S_WAIT_ATR);
-		}
 		break;
 	case ISO_S_WAIT_ATR:
 		/* Reset to initial Fi / Di ratio */
@@ -1111,6 +1104,23 @@ void card_emu_io_statechg(struct card_handle *ch, enum card_io io, int active)
 		ch->in_reset = active;
 		break;
 	}
+
+	switch (ch->state) {
+	case ISO_S_WAIT_POWER:
+	case ISO_S_WAIT_CLK:
+	case ISO_S_WAIT_RST:
+		/* check end activation state (even if the reader does
+		 * not respect the activation sequence) */
+		if (ch->vcc_active && ch->clocked && !ch->in_reset) {
+			/* enable the TC/ETU counter once reset has been released */
+			tc_etu_enable(ch->tc_chan);
+			/* prepare to send the ATR */
+			card_set_state(ch, ISO_S_WAIT_ATR);
+		}
+		break;
+	default:
+		break;
+	}
 }
 
 /* User sets a new ATR to be returned during next card reset */