diff --git a/keyboards/bluebell/swoop/keymaps/t4corun/config.h b/keyboards/bluebell/swoop/keymaps/t4corun/config.h
index 4b25d74c..c48dc97a 100644
--- a/keyboards/bluebell/swoop/keymaps/t4corun/config.h
+++ b/keyboards/bluebell/swoop/keymaps/t4corun/config.h
@@ -1,4 +1,5 @@
 #undef EE_HANDS
 
+#define RGB_MATRIX_LED_COUNT 36
 #define RGB_MATRIX_SPLIT  { 18,  18 }
 #define RGB_MATRIX_CENTER { 112, 32 }