diff --git a/CMakeLists.txt b/CMakeLists.txt
index 269a6e286f..a4b6fb4678 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -853,6 +853,7 @@ if(USE_MSH3)
   if(USE_NGTCP2 OR USE_QUICHE)
     message(FATAL_ERROR "Only one HTTP/3 backend can be selected!")
   endif()
+  find_package(MSH3 REQUIRED)
   set(USE_MSH3 ON)
   include_directories(${MSH3_INCLUDE_DIRS})
   list(APPEND CURL_LIBS ${MSH3_LIBRARIES})