diff --git a/stm-firmware/CMakeLists.txt b/stm-firmware/CMakeLists.txt
index 37ccb9b..38ab3d5 100644
--- a/stm-firmware/CMakeLists.txt
+++ b/stm-firmware/CMakeLists.txt
@@ -61,7 +61,7 @@ include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)
 
 IF(CMAKE_BUILD_TYPE STREQUAL "Debug")
 	add_definitions(-DDEBUGBUILD)
-	add_compile_options(-Og -g)
+	add_compile_options(-O0 -g)
 ELSE()
 	add_compile_options(-O3 -g)
 	add_link_options(-Wl,--gc-sections)