--- MITgcm/optim/Makefile	2008/09/30 20:00:00	1.7
+++ MITgcm/optim/Makefile	2008/10/01 15:35:37	1.8
@@ -44,6 +44,7 @@
 CPPFLAGS = -DREAL_BYTE=4		\
 	-DMAX_INDEPEND=1000000		\
 	-D_RL='double precision'	\
+	-D_RS='double precision'	\
 	-D$(OPTMODE)
 
 #                -DMAX_INDEPEND=293570968        \