diff --git a/crypto/crypto-lib.com b/crypto/crypto-lib.com
index a4b663509..b3bb42b92 100644
--- a/crypto/crypto-lib.com
+++ b/crypto/crypto-lib.com
@@ -193,7 +193,7 @@ $ LIB_CAST = "c_skey,c_ecb,c_enc,c_cfb64,c_ofb64"
 $ LIB_CAMELLIA = "camellia,cmll_misc,cmll_ecb,cmll_cbc,cmll_ofb,"+ -
 	"cmll_cfb,cmll_ctr"
 $ LIB_SEED = "seed,seed_ecb,seed_cbc,seed_cfb,seed_ofb"
-$ LIB_MODES = "cbc128,ctr128,cfb128,ofb128"
+$ LIB_MODES = "cbc128,ctr128,cfb128,ofb128,cts128"
 $ LIB_BN_ASM = "[.asm]vms.mar,vms-helper"
 $ IF F$TRNLNM("OPENSSL_NO_ASM") .OR. ARCH .NES. "VAX" THEN -
      LIB_BN_ASM = "bn_asm"