diff --git a/chap-30/CMakeLists.txt b/chap-30/CMakeLists.txt
index b7c3d40..6859b3d 100644
--- a/chap-30/CMakeLists.txt
+++ b/chap-30/CMakeLists.txt
@@ -1,2 +1,2 @@
 add_executable(aio01 aio01.c)
-target_link_libraries(aio01 yolanda)
+target_link_libraries(aio01 yolanda rt)