diff --git a/CMakeLists.txt b/CMakeLists.txt
index bfb096d..bc59655 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,8 @@ project(yolanda C CXX)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_C_STANDARD 99)
 
+set(CMAKE_VERBOSE_MAKEFILE off)
+
 # Put the libaries and binaries that get built into directories at the
 # top of the build tree rather than in hard-to-find leaf directories.
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
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)