diff --git a/cmake_modules/FindProtobufAlt.cmake b/cmake_modules/FindProtobufAlt.cmake
index d29f757ae..61c6e16e1 100644
--- a/cmake_modules/FindProtobufAlt.cmake
+++ b/cmake_modules/FindProtobufAlt.cmake
@@ -22,11 +22,8 @@ else()
 endif()
 
 set(find_package_args)
-if(ProtobufAlt_FIND_VERSION)
-  list(APPEND find_package_args ${ProtobufAlt_FIND_VERSION})
-endif()
 if(ProtobufAlt_FIND_QUIETLY)
   list(APPEND find_package_args QUIET)
 endif()
-find_package(Protobuf ${find_package_args})
-set(ProtobufAlt_FOUND ${Protobuf_FOUND})
+find_package(protobuf ${find_package_args})
+set(ProtobufAlt_FOUND ${protobuf_FOUND})