diff --git a/Makefile b/Makefile
index a4b7c736383..3c13045756b 100644
--- a/Makefile
+++ b/Makefile
@@ -638,8 +638,8 @@ fomantic: $(FOMANTIC_DEST)
 
 $(FOMANTIC_DEST): $(FOMANTIC_CONFIGS) | node_modules
 	rm -rf $(FOMANTIC_DEST_DIR)
-	cp web_src/fomantic/theme.config.less node_modules/fomantic-ui/src/theme.config
-	cp -r web_src/fomantic/_site/* node_modules/fomantic-ui/src/_site/
+	cp -f web_src/fomantic/theme.config.less node_modules/fomantic-ui/src/theme.config
+	cp -rf web_src/fomantic/_site/* node_modules/fomantic-ui/src/_site/
 	npx gulp -f node_modules/fomantic-ui/gulpfile.js build
 	@touch $(FOMANTIC_DEST)