diff --git a/site_ansto/Makefile b/site_ansto/Makefile
index f18962ab..e8276cbd 100644
--- a/site_ansto/Makefile
+++ b/site_ansto/Makefile
@@ -16,11 +16,12 @@ default: all
 EXTRA=nintf.o
 PSI_CLEAN_MATRIX = rm -f ../*.o; $(MAKE) -C ../matrix $(MFLAGS) clean
 PSI_CFLAGS = -I./ -I$(HDFROOT)/include -DHDF5 -DNXXML\
-       -fwritable-strings -DCYGNUS -DNONINTF -g $(DFORTIFY)
+       -fwritable-strings -DCYGNUS -DNONINTF -g $(DFORTIFY)\
+	   -I /usr/local/include/json/
 PSI_SLIBS = matrix/libmatrix.a
 PSI_LIBS =  -L$(HDFROOT)/lib $(NILIB)\
        -ltcl8.4 $(HDFROOT)/lib/libhdf5.a  \
-       -ldl -lz  -lm  -lc /usr/lib/libmxml.a
+       -ldl -lz  -lm  -lc /usr/lib/libmxml.a /usr/local/lib/libjson.a
 
 ../%.o : ../%.c
 	cd ..; $(CC) -c $(PSI_CFLAGS) $*.c -o $*.o