diff --git a/clang/unittests/Tooling/CMakeLists.txt b/clang/unittests/Tooling/CMakeLists.txt
--- a/clang/unittests/Tooling/CMakeLists.txt
+++ b/clang/unittests/Tooling/CMakeLists.txt
@@ -9,6 +9,7 @@
 if (MSVC)
   set_source_files_properties(RecursiveASTVisitorTest.cpp PROPERTIES COMPILE_FLAGS /bigobj)
   set_source_files_properties(RecursiveASTVisitorTestExprVisitor.cpp PROPERTIES COMPILE_FLAGS /bigobj)
+  set_source_files_properties(RecursiveASTVisitorTests/Callbacks.cpp PROPERTIES COMPILE_FLAGS /bigobj)
   set_source_files_properties(SourceCodeTest.cpp PROPERTIES COMPILE_FLAGS /bigobj)
 endif()