diff --git a/hypervisor/scripts/makefile/config.mk b/hypervisor/scripts/makefile/config.mk
index 139565bac..ade30224e 100644
--- a/hypervisor/scripts/makefile/config.mk
+++ b/hypervisor/scripts/makefile/config.mk
@@ -254,7 +254,8 @@ showconfig:
 
 diffconfig:
 	@rm -rf $(HV_CONFIG_A_DIR) $(HV_CONFIG_B_DIR)
-	@sh $(BASEDIR)/scripts/genconf.sh $(BASEDIR) $(BOARD_FILE) $(HV_SCENARIO_XML) $(HV_CONFIG_A_DIR) $(HV_UNIFIED_XML)
+	@sh $(BASEDIR)/scripts/genconf.sh $(BASEDIR) $(HV_BOARD_XML) $(HV_SCENARIO_XML) $(HV_CONFIG_A_DIR) $(HV_UNIFIED_XML)
+	@find $(HV_CONFIG_A_DIR) -name '*.aml' -delete
 	@cd $(HV_CONFIG_DIR) && find . -name '*.c' -or -name '*.h' -or -name '*.config' -or -name '*.asl' | while read f; do \
 	  nf=$(HV_CONFIG_B_DIR)/$${f}; mkdir -p `dirname $${nf}` && cp $${f} $${nf}; \
 	done