diff -up wmbiff-0.4.27/wmbiff/gnutls-common.c.orig wmbiff-0.4.27/wmbiff/gnutls-common.c
--- wmbiff-0.4.27/wmbiff/gnutls-common.c.orig	2014-07-03 16:45:39.000000000 -0600
+++ wmbiff-0.4.27/wmbiff/gnutls-common.c	2014-07-03 16:51:11.000000000 -0600
@@ -4,7 +4,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <gnutls/gnutls.h>
-#include <gnutls/extra.h>
 #include <gnutls/x509.h>
 #include <gnutls/openpgp.h>
 #include <time.h>
@@ -335,10 +334,15 @@ void print_openpgp_info(gnutls_session s
 void print_cert_vrfy(gnutls_session session)
 {
 
-	int status;
-	status = gnutls_certificate_verify_peers(session);
+	int status, retval;
+	retval = gnutls_certificate_verify_peers2(session, &status);
 	printf("\n");
 
+	if (retval != GNUTLS_E_SUCCESS) {
+		printf("- Could not verify certificate (err: %s)\n",
+		       gnutls_strerror(retval));
+		return;
+	}
 	if (status == GNUTLS_E_NO_CERTIFICATE_FOUND) {
 		printf("- Peer did not send any certificate.\n");
 		return;
@@ -637,8 +641,6 @@ void parse_comp(char **comp, int ncomp,
 				comp_priority[j++] = GNUTLS_COMP_NULL;
 			if (strncasecmp(comp[i], "ZLI", 3) == 0)
 				comp_priority[j++] = GNUTLS_COMP_ZLIB;
-			if (strncasecmp(comp[i], "LZO", 3) == 0)
-				comp_priority[j++] = GNUTLS_COMP_LZO;
 		}
 		comp_priority[j] = 0;
 	}
diff -up wmbiff-0.4.27/wmbiff/tlsComm.c.orig wmbiff-0.4.27/wmbiff/tlsComm.c
--- wmbiff-0.4.27/wmbiff/tlsComm.c.orig	2014-07-03 16:41:16.000000000 -0600
+++ wmbiff-0.4.27/wmbiff/tlsComm.c	2014-07-03 16:44:55.000000000 -0600
@@ -419,8 +419,9 @@ tls_check_certificate(struct connection_
 		bad_certificate(scs, "Unable to get certificate from peer.\n");
 		return;	/* bad_cert will exit if -skip-certificate-check was not given */
 	}
-	certstat = gnutls_certificate_verify_peers(scs->tls_state);
-	if (certstat == GNUTLS_E_NO_CERTIFICATE_FOUND) {
+	if (gnutls_certificate_verify_peers2(scs->tls_state, &certstat) != GNUTLS_E_SUCCESS) {
+		bad_certificate(scs, "cannot verify certificate.\n");
+	} else if (certstat == GNUTLS_E_NO_CERTIFICATE_FOUND) {
 		bad_certificate(scs, "server presented no certificate.\n");
 #ifdef GNUTLS_CERT_CORRUPTED
 	} else if (certstat & GNUTLS_CERT_CORRUPTED) {