diff --git a/etc/bare.armv7m.mk b/etc/bare.armv7m.mk
index 5f799a5b5..566329f44 100644
--- a/etc/bare.armv7m.mk
+++ b/etc/bare.armv7m.mk
@@ -28,8 +28,8 @@ INCLUDES += -I$(FREERTOSPATH)/Source/include \
             -I$(OPENMRNPATH)/src/freertos_drivers/common
 
 #ARCHOPTIMIZATION = -D__NEWLIB__
-ARCHOPTIMIZATION += -O3 -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer -fdata-sections -ffunction-sections
-#ARCHOPTIMIZATION += -Os -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer -fdata-sections -ffunction-sections
+#ARCHOPTIMIZATION += -O3 -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer -fdata-sections -ffunction-sections
+ARCHOPTIMIZATION += -Os -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer -fdata-sections -ffunction-sections
 
 ARCHFLAGS = -g -MD -MP -march=armv7-m -mthumb -mfloat-abi=soft