diff --git a/src/index.ts b/src/index.ts
index dc48414d3..c671b18eb 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -154,7 +154,7 @@ const loader: webpack.loader.Loader = function(source: string) {
       const styleRequest = stringifyRequest(src + query)
       if (style.module) {
         if (!hasCSSModules) {
-          stylesCode += `const cssModules = script.__cssModules = {}`
+          stylesCode += `\nconst cssModules = script.__cssModules = {}`
           hasCSSModules = true
         }
         stylesCode += genCSSModulesCode(