--- a/cmake/OpenCVFindProtobuf.cmake
+++ b/cmake/OpenCVFindProtobuf.cmake
@@ -31,7 +31,7 @@ if(BUILD_PROTOBUF)
   set(HAVE_PROTOBUF TRUE)
 else()
   unset(Protobuf_VERSION CACHE)
-  find_package(Protobuf QUIET)
+  find_package(protobuf)
 
   # Backwards compatibility
   # Define camel case versions of input variables
@@ -50,7 +50,7 @@ else()
   endforeach()
   # end of compatibility block
 
-  if(Protobuf_FOUND)
+  if(protobuf_FOUND)
     if(TARGET protobuf::libprotobuf)
       set(Protobuf_LIBRARIES "protobuf::libprotobuf")
     else()