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-rw-r--r--tmk_core/protocol/lufa.mk1
1 files changed, 1 insertions, 0 deletions
diff --git a/tmk_core/protocol/lufa.mk b/tmk_core/protocol/lufa.mk
index 1cc1fa04e5..9d9fb728b1 100644
--- a/tmk_core/protocol/lufa.mk
+++ b/tmk_core/protocol/lufa.mk
@@ -44,6 +44,7 @@ ifeq ($(strip $(VIRTSER_ENABLE)), yes)
endif
SRC += $(LUFA_SRC)
+SRC += $(LUFA_DIR)/usb_util.c
# Search Path
VPATH += $(TMK_PATH)/$(LUFA_DIR)