diff --git a/KAELz4/README.md b/KAELz4/README.md
index 60592b5f57b4581e49fbf81b8b699fef1cab5c3d..ad8b67d2dc684fe66d97d9dae358cb943c943f15 100644
--- a/KAELz4/README.md
+++ b/KAELz4/README.md
@@ -293,6 +293,7 @@ int main()
 ```
 ```shell
 gcc main.c -I/usr/local/kaelz4/include -L/usr/local/kaelz4/lib -llz4 -lkaelz4 -o kaelz4_polling_test
+export LD_LIBRARY_PATH=/usr/local/kaelz4/lib:$LD_LIBRARY_PATH
 ./kaelz4_polling_test # 输出 Test Success.
 ```
 
@@ -561,6 +562,7 @@ int main()
 
 ```shell
 gcc main.c -I/usr/local/kaelz4/include -L/usr/local/kaelz4/lib -llz4 -o kaelz4_frame_async_test
+export LD_LIBRARY_PATH=/usr/local/kaelz4/lib:$LD_LIBRARY_PATH
 ./kaelz4_frame_async_test # 输出 Test Success.
 ```