diff --git a/src/drivers/gps/module.mk b/src/drivers/gps/module.mk
index eb382c4b26..b008184244 100644
--- a/src/drivers/gps/module.mk
+++ b/src/drivers/gps/module.mk
@@ -43,3 +43,5 @@ SRCS		= gps.cpp \
 		  ubx.cpp
 
 MODULE_STACKSIZE = 1200
+
+MAXOPTIMIZATION	 = -Os