diff --git a/src/modules/_Crypto/Makefile b/src/modules/_Crypto/Makefile
index d7ff8b3e218df0ae98401925406e5ff3ad1245be..ab8dc9adc2bda48579cad8e55cfd6e0d512d6a35 100644
--- a/src/modules/_Crypto/Makefile
+++ b/src/modules/_Crypto/Makefile
@@ -22,7 +22,7 @@ CFLAGS=-Wall -O -shared -fpic $(IFLAGS) $(CPPFLAGS) -pedantic -Wall
 LDFLAGS=-shared -fpic -R$(SSLROOT)/lib -L$(SSLROOT)/lib
 LOADLIBES=-lcrypto -lssl
 
-OBJS=crypto.o md5.o md2.o idea.o des.o
+OBJS=crypto.o md5.o md2.o idea.o des.o invert.o
 
 # The actual rules