diff --git a/src/systemcmds/motor_test/module.mk b/src/systemcmds/motor_test/module.mk
index eb36d2ded8..261428ef94 100644
--- a/src/systemcmds/motor_test/module.mk
+++ b/src/systemcmds/motor_test/module.mk
@@ -39,3 +39,5 @@ MODULE_COMMAND	 = motor_test
 SRCS		 = motor_test.c
 
 MODULE_STACKSIZE = 4096
+
+MAXOPTIMIZATION	 = -Os