diff --git a/Makefile b/Makefile
index 83a1548..1482834 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ $(PROJECT).out: $(OBJECTS)
 	$(CC) $(CFLAGS) -c $< -o $@
 
 clean:
-	rm -f *.o *.out *.map *.hex
+	rm -f *.o *.out *.map *.hex *~
 
 flash: rom.hex
 	avrdude -p m644p -c stk500v2 -P $(TTYPORT) -U flash:w:rom.hex:i
diff --git a/c328.c b/c328.c
index 915a94d..df1f922 100644
--- a/c328.c
+++ b/c328.c
@@ -283,7 +283,7 @@ uint16_t c3_read(uint8_t *ptr, uint16_t length)
 			package     += b;
 			package_len -= b;
 			
-			r   -= b;
+			r -= b;
 			
 			image_read += b;
 		}