diff --git a/unittests/CMakeLists.txt b/unittests/CMakeLists.txt
index 8a5a367794b..d37b8906b48 100644
--- a/unittests/CMakeLists.txt
+++ b/unittests/CMakeLists.txt
@@ -13,6 +13,8 @@ function(add_llvm_unittest test_name)
 endfunction()
 
 include_directories(${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest/include)
+set(LLVM_REQUIRES_RTTI 1)
+add_definitions(-DGTEST_HAS_RTTI=0)
 
 set(LLVM_LINK_COMPONENTS
   jit