diff --git a/radio/src/targets/common/arm/stm32/bootloader/CMakeLists.txt b/radio/src/targets/common/arm/stm32/bootloader/CMakeLists.txt
index 74a6168d2..3a1857c29 100644
--- a/radio/src/targets/common/arm/stm32/bootloader/CMakeLists.txt
+++ b/radio/src/targets/common/arm/stm32/bootloader/CMakeLists.txt
@@ -99,7 +99,6 @@ if(PCB STREQUAL X10 OR PCB STREQUAL X12S OR PCB STREQUAL NV14)
   if(DEBUG)
     set(BOOTLOADER_SRC
       ${BOOTLOADER_SRC}
-#      ../../../../../${STM32LIB_DIR}/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_usart.c
       ../../../../../serial.cpp
       ../../../../../targets/common/arm/stm32/aux_serial_driver.cpp
       ../../../../../targets/common/arm/stm32/stm32_usart_driver.cpp