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-rw-r--r--LUFA/Drivers/Peripheral/AVR8/TWI_AVR8.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/LUFA/Drivers/Peripheral/AVR8/TWI_AVR8.c b/LUFA/Drivers/Peripheral/AVR8/TWI_AVR8.c
index 45477fd52..495744b43 100644
--- a/LUFA/Drivers/Peripheral/AVR8/TWI_AVR8.c
+++ b/LUFA/Drivers/Peripheral/AVR8/TWI_AVR8.c
@@ -29,7 +29,7 @@
*/
#include "../../../Common/Common.h"
-#if (ARCH == ARCH_AVR8)
+#if (ARCH == ARCH_AVR8) && defined(TWCR)
#define __INCLUDE_FROM_TWI_C
#include "../TWI.h"