diff --git a/testcases/kernel/syscalls/fcntl/fcntl34.c b/testcases/kernel/syscalls/fcntl/fcntl34.c
index c72951e..2f89dea 100644
--- a/testcases/kernel/syscalls/fcntl/fcntl34.c
+++ b/testcases/kernel/syscalls/fcntl/fcntl34.c
@@ -66,7 +66,7 @@ void *thread_fn_01(void *arg)
 
 	memset(buf, (intptr_t)arg, write_size);
 
-	struct flock lck = {
+	struct flock64 lck = {
 		.l_whence = SEEK_SET,
 		.l_start  = 0,
 		.l_len    = 1,