diff --git a/libuavcan_drivers/stm32/driver/src/internal.hpp b/libuavcan_drivers/stm32/driver/src/internal.hpp
index 76e041e31a..f367717e83 100644
--- a/libuavcan_drivers/stm32/driver/src/internal.hpp
+++ b/libuavcan_drivers/stm32/driver/src/internal.hpp
@@ -47,27 +47,6 @@
 # error UAVCAN_STM32_TIMER_NUMBER
 #endif
 
-/**
- * Driver debug output
- */
-#if UAVCAN_STM32_DEBUG
-# if __GNUC__
-__attribute__ ((format(printf, 1, 2)))
-# endif
-static void UAVCAN_STM32_TRACE(const char* fmt, ...)
-{
-    (void)UAVCAN_STM32_TRACE;
-    va_list args;
-    (void)std::printf("UAVCAN: STM32: ");
-    va_start(args, fmt);
-    (void)std::vprintf(fmt, args);
-    va_end(args);
-    (void)std::puts("");
-}
-#else
-# define UAVCAN_STM32_TRACE(...)    ((void)0)
-#endif
-
 /**
  * Glue macros
  */
diff --git a/libuavcan_drivers/stm32/test_stm32f107/Makefile b/libuavcan_drivers/stm32/test_stm32f107/Makefile
index 6f4e8d1abd..433059fa7a 100644
--- a/libuavcan_drivers/stm32/test_stm32f107/Makefile
+++ b/libuavcan_drivers/stm32/test_stm32f107/Makefile
@@ -16,7 +16,6 @@ CPPSRC = src/main.cpp src/dummy.cpp
 
 UDEFS = -DUAVCAN_STM32_CHIBIOS=1         \
         -DUAVCAN_STM32_TIMER_NUMBER=6    \
-        -DUAVCAN_STM32_DEBUG=1           \
         -DUAVCAN_MEM_POOL_BLOCK_SIZE=56  \
         -DUAVCAN_TOSTRING=0