diff --git a/mk/board_linux.mk b/mk/board_linux.mk
index 92de65830c..81d95feb95 100644
--- a/mk/board_linux.mk
+++ b/mk/board_linux.mk
@@ -3,6 +3,6 @@ TOOLCHAIN = NATIVE
 include $(MK_DIR)/find_tools.mk
 
 # Linux build is just the same as SITL for now
-OPTFLAGS = -O0
+OPTFLAGS = -O3
 LIBS = -lm -lpthread -lrt
 include $(MK_DIR)/board_native.mk