=== modified file 'mandos'
--- mandos	2018-02-22 18:50:12 +0000
+++ mandos	2018-08-15 09:18:22 +0000
@@ -2365,7 +2365,8 @@
                                        ctypes.byref(crtverify))
         if crtverify.value != 0:
             gnutls.openpgp_crt_deinit(crt)
-            raise gnutls.CertificateSecurityError("Verify failed")
+            raise gnutls.CertificateSecurityError(code
+                                                  =crtverify.value)
         # New buffer for the fingerprint
         buf = ctypes.create_string_buffer(20)
         buf_len = ctypes.c_size_t()