diff --git a/radio/src/datastructs.h b/radio/src/datastructs.h
index bd1f03e2d..71bda2504 100644
--- a/radio/src/datastructs.h
+++ b/radio/src/datastructs.h
@@ -868,7 +868,7 @@ PACK(struct TrainerData {
 });
 
 #if defined(PCBHORUS)
-  #define SPLASH_MODE
+  #define SPLASH_MODE uint8_t splashSpares:3
 #elif defined(FSPLASH)
   #define SPLASH_MODE uint8_t splashMode:3
 #elif defined(PCBTARANIS)