diff --git a/firmware/clean_compile_two_versions.bat b/firmware/clean_compile_two_versions.bat
index 9cf66172ad..65abcb01a3 100644
--- a/firmware/clean_compile_two_versions.bat
+++ b/firmware/clean_compile_two_versions.bat
@@ -9,7 +9,7 @@ cp build\rusefi.bin deliver\rusefi_debug.bin
 cp build\rusefi.hex deliver\rusefi_debug.hex
 
 call clean.bat
-make EXTRA_PARAMS='-DEFI_ENABLE_ASSERTS=FALSE -DCH_DBG_ENABLE_TRACE=FALSE -DCH_DBG_ENABLE_ASSERTS=FALSE -DCH_DBG_ENABLE_STACK_CHECK=FALSE -DCH_DBG_FILL_THREADS=FALSE -DCH_DBG_THREADS_PROFILING=FALSE'
+make DEBUG_LEVEL_OPT='-O2'  EXTRA_PARAMS='-DEFI_ENABLE_ASSERTS=FALSE -DCH_DBG_ENABLE_TRACE=FALSE -DCH_DBG_ENABLE_ASSERTS=FALSE -DCH_DBG_ENABLE_STACK_CHECK=FALSE -DCH_DBG_FILL_THREADS=FALSE -DCH_DBG_THREADS_PROFILING=FALSE'
 
 cp build\rusefi.elf deliver\rusefi_release.elf
 cp build\rusefi.bin deliver\rusefi_release.bin