diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6661db6c..1064a32e0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE "Release")
 endif()
 
-option(MUDUO_BUILD_EXAMPLES ON)
+option(MUDUO_BUILD_EXAMPLES "Build Muduo examples" ON)
 
 set(CXX_FLAGS
  -g