diff --git a/lustre/ldlm/ldlm_flock.c b/lustre/ldlm/ldlm_flock.c
index 4dba55b3397770352afb4cc52bb88448d52f3797..1047b890f2930661ef81ea9b565dd47c0018a8ff 100644
--- a/lustre/ldlm/ldlm_flock.c
+++ b/lustre/ldlm/ldlm_flock.c
@@ -541,8 +541,8 @@ granted:
                         cfs_flock_set_type(getlk, F_UNLCK);
                 }
                 cfs_flock_set_pid(getlk, (pid_t)lock->l_policy_data.l_flock.pid);
-                cfs_flock_set_start(getlk, (off_t)lock->l_policy_data.l_flock.start);
-                cfs_flock_set_end(getlk, (off_t)lock->l_policy_data.l_flock.end);
+                cfs_flock_set_start(getlk, (loff_t)lock->l_policy_data.l_flock.start);
+                cfs_flock_set_end(getlk, (loff_t)lock->l_policy_data.l_flock.end);
         } else {
                 int noreproc = LDLM_FL_WAIT_NOREPROC;