diff --git a/test/syscalls/linux/pty.cc b/test/syscalls/linux/pty.cc
index 93e97674e..6aba0ae86 100644
--- a/test/syscalls/linux/pty.cc
+++ b/test/syscalls/linux/pty.cc
@@ -1653,6 +1653,7 @@ TEST_F(JobControlTest, SetForegroundProcessGroupSIGTTOUBackground) {
     int wstatus;
     TEST_PCHECK(waitpid(grandchild, &wstatus, WSTOPPED) == grandchild);
     TEST_PCHECK(WSTOPSIG(wstatus) == SIGTTOU);
+    EXPECT_THAT(kill(grandchild, SIGKILL), SyscallSucceeds());
   });
   ASSERT_NO_ERRNO(res);
 }