"\xe1\x55\x10\x6a\xa8\xdc\xd6\x18"
                          "\xe4\x09\x9a\xaa",
                .rlen   = 68,
-       }
+       }, { /* nearly same as previous, but should fail */
+               .key    = "\x4c\x80\xcd\xef\xbb\x5d\x10\xda"
+                         "\x90\x6a\xc7\x3c\x36\x13\xa6\x34"
+                         "\x22\x43\x3c\x64",
+               .klen   = 20,
+               .iv     = zeroed_string,
+               .assoc  = "\x00\x00\x43\x21\x00\x00\x00\x07"
+                         "\x00\x00\x00\x00\x00\x00\x00\x00",
+               .alen   = 16,
+               .input  = "\x45\x00\x00\x30\xda\x3a\x00\x00"
+                         "\x80\x01\xdf\x3b\xc0\xa8\x00\x05"
+                         "\xc0\xa8\x00\x01\x08\x00\xc6\xcd"
+                         "\x02\x00\x07\x00\x61\x62\x63\x64"
+                         "\x65\x66\x67\x68\x69\x6a\x6b\x6c"
+                         "\x6d\x6e\x6f\x70\x71\x72\x73\x74"
+                         "\x01\x02\x02\x01",
+               .ilen   = 52,
+               .novrfy = 1,
+               .result = "\x45\x00\x00\x30\xda\x3a\x00\x00"
+                         "\x80\x01\xdf\x3b\xc0\xa8\x00\x05"
+                         "\xc0\xa8\x00\x01\x08\x00\xc6\xcd"
+                         "\x02\x00\x07\x00\x61\x62\x63\x64"
+                         "\x65\x66\x67\x68\x69\x6a\x6b\x6c"
+                         "\x6d\x6e\x6f\x70\x71\x72\x73\x74"
+                         "\x01\x02\x02\x01\xf2\xa9\xa8\x36"
+                         "\xe1\x55\x10\x6a\xa8\xdc\xd6\x18"
+                         "\x00\x00\x00\x00",
+               .rlen   = 68,
+       },
 };
 
 static const struct aead_testvec aes_gcm_rfc4543_dec_tv_template[] = {