diff --git a/lib/Makefile.linux b/lib/Makefile.linux
index d01c7f658..27f70061c 100644
--- a/lib/Makefile.linux
+++ b/lib/Makefile.linux
@@ -35,7 +35,7 @@ libjt9.a: $(OBJS1)
 	ar cr libjt9.a $(OBJS1) 
 	ranlib libjt9.a
 
-OBJS2 = jt9.o 
+OBJS2 = jt9.o jt9a.o
 
 jt9: 	$(OBJS2) libjt9.a
 	g++ -o jt9 $(OBJS2) -lQtCore libjt9.a -lfftw3f -lgfortran