LUFA_OPTS += -D FIXED_NUM_CONFIGURATIONS=1
 LUFA_OPTS += -D USE_FLASH_DESCRIPTORS
 LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
-LUFA_OPTS += -D NO_STREAM_CALLBACKS
 
 
 # Create the LUFA source path variables by including the LUFA root makefile
          Lib/SideshowCommon.c                                        \
          Lib/SideshowContent.c                                       \
          $(LUFA_SRC_USB)                                             \
-         $(LUFA_SRC_SERIAL)                                          \
-         $(LUFA_SRC_SERIALSTREAM)
+         $(LUFA_SRC_SERIAL)
 
 
 # List C++ source files here. (C dependencies are automatically generated.)