diff --git a/e2e/__projects__/style/components/External.vue b/e2e/__projects__/style/components/External.vue
index 3d4a7214..a73939a0 100644
--- a/e2e/__projects__/style/components/External.vue
+++ b/e2e/__projects__/style/components/External.vue
@@ -8,6 +8,8 @@
 
 <style module="$style2" src="~__styles/external.css" />
 
+<style module="$style3" src="./styles/external.css"></style>
+
 <style module="css">
 .a {
   background: color(red a(90%));
diff --git a/e2e/__projects__/style/test.js b/e2e/__projects__/style/test.js
index 18c9cdcc..af0777bd 100644
--- a/e2e/__projects__/style/test.js
+++ b/e2e/__projects__/style/test.js
@@ -46,5 +46,6 @@ test('process External', () => {
   expect(wrapper.vm).toBeTruthy()
   expect(wrapper.vm.$style.testClass).toEqual('testClass')
   expect(wrapper.vm.$style2.testClass).toEqual('testClass')
+  expect(wrapper.vm.$style3.testClass).toEqual('testClass')
   expect(wrapper.vm.css.a).toEqual('a')
 })
diff --git a/lib/process-style.js b/lib/process-style.js
index 9ecfd93b..d4230ef5 100644
--- a/lib/process-style.js
+++ b/lib/process-style.js
@@ -52,7 +52,7 @@ function getPreprocessOptions(lang, filePath, jestConfig) {
 module.exports = function processStyle(stylePart, filePath, config = {}) {
   const vueJestConfig = getVueJestConfig(config)
 
-  if (stylePart.src && !stylePart.content) {
+  if (stylePart.src && !stylePart.content.trim()) {
     const cssFilePath = applyModuleNameMapper(
       stylePart.src,
       filePath,