diff --git a/src/modules/_Crypto/Makefile.in b/src/modules/_Crypto/Makefile.in
index 77a70d599f936685fe5ead70c6321d9af7b279d7..bd11e5dfcfdf63f797a49a8b4a41ab037189f2aa 100644
--- a/src/modules/_Crypto/Makefile.in
+++ b/src/modules/_Crypto/Makefile.in
@@ -1,6 +1,6 @@
 SRCDIR=@srcdir@
 VPATH=@srcdir@:@srcdir@/../..:../..
-OBJS=crypto.o idea.o des.o rc4.o sha.o pipe.o cbc.o lib/algorithms.a
+OBJS=crypto.o idea.o des.o rc4.o invert.o sha.o pipe.o cbc.o lib/algorithms.a
 
 MODULE_CPPFLAGS= -I$(SRCDIR)/include -DPIKE