diff --git a/lib/Makefile.am b/lib/Makefile.am
index cef6a2f..d7092a7 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -80,4 +80,4 @@ endif
 # Unseal library - for addition to existing apps, counter part of seal cmd
 libtpm_unseal_la_SOURCES =	tpm_unseal.c
 libtpm_unseal_la_LDFLAGS =	-shared -version-info 1:0:0
-libtpm_unseal_la_LIBADD  =	-ltspi  libtpm_tspi.la @INTLLIBS@
+libtpm_unseal_la_LIBADD  =	-ltspi  libtpm_tspi.la -lcrypto @INTLLIBS@