diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template
index e096aadb49..8ed9cd3da4 100755
--- a/BaseTools/Conf/tools_def.template
+++ b/BaseTools/Conf/tools_def.template
@@ -1834,7 +1834,7 @@ NOOPT_CLANGPDB_X64_GENFW_FLAGS      = --keepexceptiontable
 #
 ####################################################################################
 *_CLANGDWARF_*_*_FAMILY             = GCC
-*_CLANGDWARF_*_*_BUILDRULEFAMILY    = CLANGGCC
+
 *_CLANGDWARF_*_MAKE_PATH            = ENV(CLANG_HOST_BIN)make
 *_CLANGDWARF_*_*_DLL                = ENV(CLANGDWARF_DLL)
 *_CLANGDWARF_*_ASL_PATH             = DEF(UNIX_IASL_BIN)