CUDA mining (solo), why target is #000000000000?

Hi,

I have configured my hardware for solo mining (I hope correctly). But I'm not sure that is working how it should.
Why target is always #000000000000? Or it is ok?

Software:
ethminer version 0.9.41-genoil-1.1.7
Build: Linux/g++/int/Release

Logs:
ethermine (CUDA):
m 14:18:26|ethminer Got work package: #99c08e65
ℹ 14:18:26|cudaminer0 set work; seed: #2228076c, target: #000000000000
ℹ 14:18:26|cudaminer1 set work; seed: #2228076c, target: #000000000000
ℹ 14:18:26|cudaminer2 set work; seed: #2228076c, target: #000000000000
ℹ 14:18:26|cudaminer3 set work; seed: #2228076c, target: #000000000000
ℹ 14:18:26|cudaminer4 set work; seed: #2228076c, target: #000000000000
ℹ 14:18:26|cudaminer5 set work; seed: #2228076c, target: #000000000000
ℹ 14:18:26|cudaminer6 set work; seed: #2228076c, target: #000000000000
ℹ 14:18:26|cudaminer7 set work; seed: #2228076c, target: #000000000000
m 14:18:27|ethminer Mining on PoWhash #99c08e65 : 109.05MH/s [A0+0:R0+0:F0]
m 14:18:27|ethminer Mining on PoWhash #99c08e65 : 102.76MH/s [A0+0:R0+0:F0]
m 14:18:28|ethminer Mining on PoWhash #99c08e65 : 100.66MH/s [A0+0:R0+0:F0]
m 14:18:28|ethminer Mining on PoWhash #99c08e65 : 104.86MH/s [A0+0:R0+0:F0]
m 14:18:29|ethminer Mining on PoWhash #99c08e65 : 100.66MH/s [A0+0:R0+0:F0]
m 14:18:29|ethminer Mining on PoWhash #99c08e65 : 102.76MH/s [A0+0:R0+0:F0]
m 14:18:30|ethminer Mining on PoWhash #99c08e65 : 109.05MH/s [A0+0:R0+0:F0]
m 14:18:30|ethminer Mining on PoWhash #99c08e65 : 100.66MH/s [A0+0:R0+0:F0]
m 14:18:31|ethminer Mining on PoWhash #99c08e65 : 102.76MH/s [A0+0:R0+0:F0]
m 14:18:31|ethminer Mining on PoWhash #99c08e65 : 104.86MH/s [A0+0:R0+0:F0]
m 14:18:32|ethminer Mining on PoWhash #99c08e65 : 102.76MH/s [A0+0:R0+0:F0]
m 14:18:32|ethminer Mining on PoWhash #99c08e65 : 104.86MH/s [A0+0:R0+0:F0]
m 14:18:33|ethminer Mining on PoWhash #99c08e65 : 104.86MH/s [A0+0:R0+0:F0]

geth:
INFO [06-26|14:17:05] Imported new chain segment blocks=1 txs=106 mgas=2.496 elapsed=109.512ms mgasps=22.789 number=3933178 hash=c97d8a…166121
INFO [06-26|14:17:05] Commit new mining work number=3933179 txs=86 uncles=0 elapsed=443.256ms
INFO [06-26|14:17:45] Imported new chain segment blocks=1 txs=93 mgas=4.704 elapsed=109.859ms mgasps=42.821 number=3933179 hash=23b5cb…75164d
INFO [06-26|14:17:45] Commit new mining work number=3933180 txs=38 uncles=0 elapsed=415.124ms
INFO [06-26|14:17:51] Imported new chain segment blocks=1 txs=33 mgas=4.611 elapsed=35.389ms mgasps=130.287 number=3933180 hash=5c1386…c16d18
INFO [06-26|14:17:51] Commit new mining work number=3933181 txs=40 uncles=0 elapsed=417.706ms
INFO [06-26|14:18:02] Imported new chain segment blocks=1 txs=35 mgas=4.694 elapsed=39.682ms mgasps=118.288 number=3933181 hash=ceda18…693c7b
INFO [06-26|14:18:02] Commit new mining work number=3933182 txs=132 uncles=0 elapsed=487.377ms
INFO [06-26|14:18:22] Imported new chain segment blocks=1 txs=100 mgas=4.711 elapsed=137.415ms mgasps=34.281 number=3933182 hash=03cbda…b82cf0
INFO [06-26|14:18:23] Commit new mining work number=3933183 txs=92 uncles=0 elapsed=430.123ms
INFO [06-26|14:18:25] Imported new chain segment blocks=1 txs=51 mgas=1.129 elapsed=49.582ms mgasps=22.760 number=3933183 hash=dbe273…3a43c2
INFO [06-26|14:18:26] Commit new mining work number=3933184 txs=92 uncles=0 elapsed=441.167ms
INFO [06-26|14:18:32] Imported new chain segment blocks=1 txs=56 mgas=4.676 elapsed=74.762ms mgasps=62.546 number=3933184 hash=dc154b…b1d17d
INFO [06-26|14:18:32] Commit new mining work number=3933185 txs=103 uncles=0 elapsed=467.585ms
INFO [06-26|14:18:38] Imported new chain segment blocks=1 txs=3 mgas=0.063 elapsed=6.415ms mgasps=9.820 number=3933185 hash=a7e8eb…2e7d1e
INFO [06-26|14:18:39] Commit new mining work number=3933186 txs=120 uncles=0 elapsed=460.553ms
INFO [06-26|14:18:49] Imported new chain segment blocks=1 txs=90 mgas=4.697 elapsed=121.272ms mgasps=38.729 number=3933186 hash=c8c436…07b0e1
INFO [06-26|14:18:50] Commit new mining work number=3933187 txs=85 uncles=0 elapsed=443.967ms
INFO [06-26|14:19:01] Imported new chain segment blocks=1 txs=11 mgas=2.415 elapsed=14.755ms mgasps=163.687 number=3933187 hash=083c74…8f0bf3
INFO [06-26|14:19:01] Commit new mining work number=3933188 txs=105 uncles=0 elapsed=464.711ms
INFO [06-26|14:19:07] Imported new chain segment blocks=1 txs=85 mgas=2.395 elapsed=93.359ms mgasps=25.651 number=3933188 hash=ea3cfb…a116ab
INFO [06-26|14:19:08] Commit new mining work number=3933189 txs=58 uncles=0 elapsed=462.554ms
INFO [06-26|14:19:09] Imported new chain segment blocks=1 txs=4 mgas=0.130 elapsed=8.331ms mgasps=15.616 number=3933189 hash=b0e913…1f2f92
INFO [06-26|14:19:10] Commit new mining work number=3933190 txs=11 uncles=0 elapsed=296.778ms
INFO [06-26|14:19:35] Imported new chain segment blocks=1 txs=8 mgas=4.699 elapsed=13.151ms mgasps=357.334 number=3933190 hash=f6aa2b…fe72ad
INFO [06-26|14:19:35] Commit new mining work number=3933191 txs=53 uncles=0 elapsed=408.059ms