diff --git a/radio/src/debug.h b/radio/src/debug.h
index 90aca3d88..2a0030cc5 100644
--- a/radio/src/debug.h
+++ b/radio/src/debug.h
@@ -46,7 +46,7 @@ extern "C" {
 #elif defined(DEBUG) && defined(CLI)
   uint8_t serial2TracesEnabled();
   #define debugPrintf(...) do { if (serial2TracesEnabled() && cliTracesEnabled) serialPrintf(__VA_ARGS__); } while(0)
-#elif defined(DEBUG) && defined(CPUARM)
+#elif defined(DEBUG) && defined(CPUARM) && !defined(PCBX7)
   uint8_t serial2TracesEnabled();
   #define debugPrintf(...) do { if (serial2TracesEnabled()) serialPrintf(__VA_ARGS__); } while(0)
 #else