diff --git a/testsuite/Makefile.am b/testsuite/Makefile.am
index e51c5927a0ea4c56def3d036b81726debb8cb3a5..afee947e35f94b742f131dbe3ad9b26fd2442fff 100644
--- a/testsuite/Makefile.am
+++ b/testsuite/Makefile.am
@@ -2,7 +2,7 @@ CFLAGS = -I$(top_srcdir) @CFLAGS@ -O0
 CPPFLAGS = @CPPFLAGS@
 
 TS_PROGS = aes-test arcfour-test blowfish-test des-test md5-test sha1-test \
-	   twofish-test
+	   serpent-test twofish-test
 
 noinst_PROGRAMS = $(TS_PROGS)