diff --git a/test/cases/parsing/bom/index.js b/test/cases/parsing/bom/index.js
index 20d38778569..7e8eead4a4a 100644
--- a/test/cases/parsing/bom/index.js
+++ b/test/cases/parsing/bom/index.js
@@ -4,7 +4,7 @@ it("should load a utf-8 file with BOM", function () {
 });
 
 it("should load a css file with BOM", function () {
-	var css = require("!css-loader!./bomfile.css").default + "";
+	var css = require("!css-loader?sourceMap=false!./bomfile.css").default + "";
 	expect(css).toBe("body{color:#abc}");
 });