1 files changed, 1 insertions, 1 deletions
diff --git a/biology/deft/files/Makefile.deft b/biology/deft/files/Makefile.deft
index e4e8cf80353f..2d603e6a9593 100644
--- a/biology/deft/files/Makefile.deft
+++ b/biology/deft/files/Makefile.deft
@@ -2,7 +2,7 @@
 # Makefile for DeFT
 #
 TARGET = DeFT.exec
-FFLAGS = -O2 -malign-double -Nn802
+FFLAGS ?= -O2 -malign-double -Nn802
 LFLAGS = 
 SRCS:sh = ls *.f
 OBJS = $(SRCS:.f=.o)