diff --git a/Src/pio/libs/libGUI.a b/Src/pio/libs/libGUI.a
index cc22995..e29c6d2 100644
Binary files a/Src/pio/libs/libGUI.a and b/Src/pio/libs/libGUI.a differ
diff --git a/platformio.ini b/platformio.ini
index f7d2b14..09677cd 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -25,6 +25,7 @@ extra_scripts   = pre:configure-build.py
 board                 = genericSTM32F407VET6
 board_build.firmware  = mkstft35.bin
 board_build.offset    = 0xC000
+debug_build_flags     = -Os -ggdb3 -g3
 build_flags           = -DTFT35
   -Wl,--defsym=LD_MAX_DATA_SIZE=131032
   -Wl,--defsym=LD_FLASH_OFFSET=0xC000