diff --git a/kernel/dma/map_benchmark.c b/kernel/dma/map_benchmark.c
index 0520a8f4fb1d..02205ab53b7e 100644
--- a/kernel/dma/map_benchmark.c
+++ b/kernel/dma/map_benchmark.c
@@ -356,4 +356,3 @@ module_exit(map_benchmark_cleanup);
 
 MODULE_AUTHOR("Barry Song <song.bao.hua@hisilicon.com>");
 MODULE_DESCRIPTION("dma_map benchmark driver");
-MODULE_LICENSE("GPL");