diff --git a/platform.txt b/platform.txt
index f49543e..a1863c0 100644
--- a/platform.txt
+++ b/platform.txt
@@ -30,7 +30,7 @@ compiler.warning_flags.all=-Wall -Wextra
 #  - this is alpha and may be subject to change without notice
 compiler.optimization_flags=-Os
 compiler.optimization_flags.release=-Os
-compiler.optimization_flags.debug=-O0 -g3
+compiler.optimization_flags.debug=-Og -g3
 
 compiler.extra_flags = -march=rv32imc_zicsr_zifencei -mabi=ilp32 -mcmodel=medlow -Wall -fsigned-char -ffunction-sections
 compiler.S.flags     = {compiler.extra_flags} -x assembler-with-cpp {compiler.define} {compiler.optimization_flags} {compiler.warning_flags} {compiler.MIK32_Amur.extra_include}