diff --git a/BaseTools/Conf/build_rule.template b/BaseTools/Conf/build_rule.template
index c034869915..1395792cd6 100755
--- a/BaseTools/Conf/build_rule.template
+++ b/BaseTools/Conf/build_rule.template
@@ -515,7 +515,7 @@
         "$(PP)" $(DEPS_FLAGS) $(PP_FLAGS) $(INC) ${src} > ${d_path}(+)${s_base}.ii
         Trim --source-code --convert-hex --trim-long -o ${d_path}(+)${s_base}.iii ${d_path}(+)${s_base}.ii
         cd $(OUTPUT_DIR)(+)${s_dir}
-        "$(ASM16)" /nologo /c /omf $(INC) /Fo$(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.obj ${d_path}(+)${s_base}.iii
+        "$(ASM16)" /nologo /c /omf $(ASM16_FLAGS) $(INC) /Fo$(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.obj ${d_path}(+)${s_base}.iii
         "$(ASMLINK)" $(ASMLINK_FLAGS) $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.obj,${dst},,,,
 
     <Command.GCC>