diff --git a/firmware/controllers/math/pid_auto_tune.h b/firmware/controllers/math/pid_auto_tune.h
index 36e5c7ebf7..141e0d6c99 100644
--- a/firmware/controllers/math/pid_auto_tune.h
+++ b/firmware/controllers/math/pid_auto_tune.h
@@ -16,7 +16,7 @@
 
 // that's a weird piece of code for sure
 #ifndef byte
-#define byte uint8_t
+typedef unsigned char	byte;
 #endif
 
   // irrational constants