diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6b095b04..f99268eb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,7 +28,7 @@ endif()
 include(GNUInstallDirs)
 
 option(PHREEQCRM_WITH_YAML_CPP "Build with yaml-cpp support" OFF)
-find_package(yaml-cpp)
+find_package(yaml-cpp QUIET)
 if(PHREEQCRM_WITH_YAML_CPP)
   find_package(yaml-cpp REQUIRED)
 endif()