diff --git a/build-cmake/CMakeLists.txt b/build-cmake/CMakeLists.txt
index ba0b730..a5161cf 100644
--- a/build-cmake/CMakeLists.txt
+++ b/build-cmake/CMakeLists.txt
@@ -15,7 +15,7 @@ if(MSVC AND NOT BUILD_SHARED_LIBS)
   set(Protobuf_USE_STATIC_LIBS ON)
 endif()
 
-find_package(Protobuf CONFIG)
+find_package(Protobuf CONFIG REQUIRED)
 if(Protobuf_FOUND)
   # Keep compatibility with FindProtobuf CMake module
   set(PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protobuf::protoc>)