TBS has canceled Lopez Tonight because Conan O’Brien is killing George Lopez in ratings.

When Conan made his return to late night TV at the 11 p.m. time slot, viewership for Lopez Tonight dropped by 40%, making it hard for TBS to keep the show.

“We are proud to have partnered with George Lopez, who is an immensely talented comedian and entertainer,” the network said in a statement. “TBS has valued its partnership with George and appreciates all of his work on behalf of the network, both on and off the air.”

TBS is wasting no time; the last episode of Lopez Tonight will air tomorrow.