diff --git a/sys/boot/arm/at91/libat91/arm_init.S b/sys/boot/arm/at91/libat91/arm_init.S
index cdc39a749f6..a15fb540e9c 100644
--- a/sys/boot/arm/at91/libat91/arm_init.S
+++ b/sys/boot/arm/at91/libat91/arm_init.S
@@ -60,9 +60,13 @@ dabtvec:
 rsvdvec:
 #ifdef BOOT_IIC
 		.long	(TWI_EEPROM_SIZE >> 9)
+#else
+#ifdef BOOT_BWCT
+		.long	((528 << 17) | (13 << 13) | (12 * 2))
 #else
 		.long	((1056 << 17) | (13 << 13) | (12 * 2))
 #endif
+#endif
 irqvec:
                 ldr         pc, [pc,#-0xF20]    @; IRQ : read the AIC
 fiqvec: