--- a/configure.in
+++ b/configure.in
@@ -1214,7 +1214,7 @@
 				ol_with_tls=gnutls
 				ol_link_tls=yes
 
-				TLS_LIBS="-lgnutls"
+				TLS_LIBS="-lgnutls -lgcrypt"
 
 				AC_DEFINE(HAVE_GNUTLS, 1, 
 					[define if you have GNUtls])