diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c
index a67345f..c7e4962 100644
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -396,6 +396,9 @@
 	} else {			/* MCI1 */
 		start = AT91SAM9263_BASE_MCI1;
 
+		/* CLK */
+		at91_set_A_periph(AT91_PIN_PA6, 0);
+
 		if (data->slot_b) {
 			/* CMD */
 			at91_set_A_periph(AT91_PIN_PA21, 1);