1 files changed, 4 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 693edc9f0..331badcf8 100644
--- a/Makefile
+++ b/Makefile
@@ -190,6 +190,10 @@ ifeq ($(strip $(MIDI_ENABLE)), yes)
 	SRC += $(QUANTUM_DIR)/process_keycode/process_midi.c
 endif
 
+ifeq ($(strip $(VIRTSER_ENABLE)), yes)
+    OPT_DEFS += -DVIRTSER_ENABLE
+endif
+
 ifeq ($(strip $(AUDIO_ENABLE)), yes)
     OPT_DEFS += -DAUDIO_ENABLE
 	SRC += $(QUANTUM_DIR)/process_keycode/process_music.c