diff --git a/src/modules/uORB/module.mk b/src/modules/uORB/module.mk
index 0c29101fec..9385ce253c 100644
--- a/src/modules/uORB/module.mk
+++ b/src/modules/uORB/module.mk
@@ -44,3 +44,5 @@ SRCS			= uORB.cpp \
 			  objects_common.cpp \
 			  Publication.cpp \
 			  Subscription.cpp
+
+MAXOPTIMIZATION	 = -Os