diff --git a/arduino-mk/Arduino.mk b/arduino-mk/Arduino.mk
index 09819ac..450e482 100644
--- a/arduino-mk/Arduino.mk
+++ b/arduino-mk/Arduino.mk
@@ -401,6 +401,7 @@ ifndef F_CPU
 F_CPU = $(shell $(PARSE_BOARD_CMD) $(BOARD_TAG) build.f_cpu)
 endif
 
+ifeq ($(VARIANT),leonardo) 
 # USB IDs for the Leonardo
 ifndef USB_VID
 USB_VID = $(shell $(PARSE_BOARD_CMD) $(BOARD_TAG) build.vid)
@@ -409,6 +410,7 @@ endif
 ifndef USB_PID
 USB_PID = $(shell $(PARSE_BOARD_CMD) $(BOARD_TAG) build.pid)
 endif
+endif
 
 # normal programming info
 ifndef AVRDUDE_ARD_PROGRAMMER