diff --git a/fuses.h b/fuses.h
index 4f6e411..dc7191e 100644
--- a/fuses.h
+++ b/fuses.h
@@ -1,27 +1,29 @@
-#if defined (__AVR_ATmega168__)
-FUSES = {
-	.low = FUSE_CKSEL3 & FUSE_SUT0,
-	.high = FUSE_SPIEN,
-	.extended = FUSE_BOOTSZ1 & FUSE_BOOTSZ0,
-};
-#elif defined (__AVR_ATmega328P__)
-FUSES = {
-	.low = FUSE_CKSEL3 & FUSE_SUT0,
-	.high = FUSE_SPIEN & FUSE_BOOTSZ0 & FUSE_BOOTSZ1,
-	.extended = EFUSE_DEFAULT,
-};
-#elif defined (__AVR_ATmega644__) || defined (__AVR_ATmega644P__)
-FUSES = {
-	.low = FUSE_CKSEL3 & FUSE_SUT0,
-	.high = FUSE_SPIEN & FUSE_BOOTSZ0 & FUSE_BOOTSZ1,
-	.extended = EFUSE_DEFAULT,
-};
-#elif defined (__AVR_ATmega1280__)
-FUSES = {
-	.low = FUSE_CKSEL3 & FUSE_SUT0,
-	.high = FUSE_SPIEN & FUSE_BOOTSZ0 & FUSE_BOOTSZ1,
-	.extended = EFUSE_DEFAULT,
-};
-#else
-#warning No fuse definitions for this chip in fuses.h!
-#endif
+#ifdef FUSES
+	#if defined (__AVR_ATmega168__)
+	FUSES = {
+		.low = FUSE_CKSEL3 & FUSE_SUT0,
+		.high = FUSE_SPIEN,
+		.extended = FUSE_BOOTSZ1 & FUSE_BOOTSZ0,
+	};
+	#elif defined (__AVR_ATmega328P__)
+	FUSES = {
+		.low = FUSE_CKSEL3 & FUSE_SUT0,
+		.high = FUSE_SPIEN & FUSE_BOOTSZ0 & FUSE_BOOTSZ1,
+		.extended = EFUSE_DEFAULT,
+	};
+	#elif defined (__AVR_ATmega644__) || defined (__AVR_ATmega644P__)
+	FUSES = {
+		.low = FUSE_CKSEL3 & FUSE_SUT0,
+		.high = FUSE_SPIEN & FUSE_BOOTSZ0 & FUSE_BOOTSZ1,
+		.extended = EFUSE_DEFAULT,
+	};
+	#elif defined (__AVR_ATmega1280__)
+	FUSES = {
+		.low = FUSE_CKSEL3 & FUSE_SUT0,
+		.high = FUSE_SPIEN & FUSE_BOOTSZ0 & FUSE_BOOTSZ1,
+		.extended = EFUSE_DEFAULT,
+	};
+	#else
+		#warning No fuse definitions for this chip in fuses.h!
+	#endif
+#endif	/* FUSES */