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Diffstat (limited to 'tmk_core/common/sync_timer.h')
-rw-r--r--tmk_core/common/sync_timer.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/tmk_core/common/sync_timer.h b/tmk_core/common/sync_timer.h
index 9ddef45bb2..744e2b50d5 100644
--- a/tmk_core/common/sync_timer.h
+++ b/tmk_core/common/sync_timer.h
@@ -32,7 +32,7 @@ SOFTWARE.
extern "C" {
#endif
-#if defined(SPLIT_KEYBOARD) && !defined(DISABLE_SYNC_TIMER)
+#if (defined(SPLIT_KEYBOARD) || defined(SERIAL_LINK_ENABLE)) && !defined(DISABLE_SYNC_TIMER)
void sync_timer_init(void);
void sync_timer_update(uint32_t time);
uint16_t sync_timer_read(void);