1 files changed, 5 insertions, 0 deletions

diff --git a/common_features.mk b/common_features.mk
index 117f84260..bae23bb87 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -119,6 +119,11 @@ ifeq ($(strip $(PRINTING_ENABLE)), yes)
     SRC += $(TMK_DIR)/protocol/serial_uart.c
 endif
 
+ifeq ($(strip $(AUTO_SHIFT_ENABLE)), yes)
+    OPT_DEFS += -DAUTO_SHIFT_ENABLE
+    SRC += $(QUANTUM_DIR)/process_keycode/process_auto_shift.c
+endif
+
 ifeq ($(strip $(SERIAL_LINK_ENABLE)), yes)
     SRC += $(patsubst $(QUANTUM_PATH)/%,%,$(SERIAL_SRC))
     OPT_DEFS += $(SERIAL_DEFS)