1 files changed, 5 insertions, 1 deletions

diff --git a/keyboards/wilba_tech/wt_mono_backlight.c b/keyboards/wilba_tech/wt_mono_backlight.c
index daf738da2..fbc3102e8 100644
--- a/keyboards/wilba_tech/wt_mono_backlight.c
+++ b/keyboards/wilba_tech/wt_mono_backlight.c
@@ -26,9 +26,13 @@
 #include "quantum/color.h"
 #include "tmk_core/common/eeprom.h"
 
-#include "via.h" // uses only the EEPROM address
+#include "via.h" // uses EEPROM address, lighting value IDs
 #define MONO_BACKLIGHT_CONFIG_EEPROM_ADDR (VIA_EEPROM_CUSTOM_CONFIG_ADDR)
 
+#if VIA_EEPROM_CUSTOM_CONFIG_SIZE == 0
+#error VIA_EEPROM_CUSTOM_CONFIG_SIZE was not defined to store backlight_config struct
+#endif
+
 #include "drivers/issi/is31fl3736.h"
 
 #define ISSI_ADDR_DEFAULT 0x50