ARDUINO = $(INSTALL_DIR)/hardware/arduino
 ARDUINOCORE = $(ARDUINO)/cores/arduino
 ARDUINOVAR = $(ARDUINO)/variants/$(VARIANT)
-#AVR_TOOLS_PATH = /usr/bin
 AVR_TOOLS_PATH = /usr/bin
 SRC =  $(ARDUINOCORE)/wiring.c \
 $(ARDUINOCORE)/wiring_analog.c $(ARDUINOCORE)/wiring_digital.c \
 
 # Target: clean project.
 clean:
-       $(REMOVE) applet/$(TARGET).hex applet/$(TARGET).eep applet/$(TARGET).cof applet/$(TARGET).elf \
+       $(REMOVE) applet/$(TARGET).cpp applet/$(TARGET).hex applet/$(TARGET).eep applet/$(TARGET).cof applet/$(TARGET).elf \
        applet/$(TARGET).map applet/$(TARGET).sym applet/$(TARGET).lss applet/core.a \
        $(OBJ) $(LST) $(SRC:.c=.s) $(SRC:.c=.d) $(CXXSRC:.cpp=.s) $(CXXSRC:.cpp=.d)