diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake
index 447ba52ce0971..201c2b6254009 100644
--- a/llvm/cmake/modules/HandleLLVMOptions.cmake
+++ b/llvm/cmake/modules/HandleLLVMOptions.cmake
@@ -67,12 +67,6 @@ if( LLVM_ENABLE_ASSERTIONS )
         "${flags_var_to_scrub}" "${${flags_var_to_scrub}}")
     endforeach()
   endif()
-else()
-  if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" )
-    if( NOT MSVC_IDE AND NOT XCODE )
-      add_definitions( -DNDEBUG )
-    endif()
-  endif()
 endif()
 
 if(WIN32)