diff --git a/lib/builder/webpack/style-loader.js b/lib/builder/webpack/style-loader.js
index 2c4c41ff7e..82a1183cfe 100755
--- a/lib/builder/webpack/style-loader.js
+++ b/lib/builder/webpack/style-loader.js
@@ -21,11 +21,6 @@ export default function styleLoader (ext, loaders = [], isVueLoader = false) {
       loader: 'postcss-loader',
       options: this.options.build.postcss
     }
-    if (postcssLoader.options === true) {
-      postcssLoader.options = {
-        sourceMap: this.options.build.cssSourceMap
-      }
-    }
   }
 
   // https://github.com/webpack-contrib/css-loader
diff --git a/lib/common/options.js b/lib/common/options.js
index f4e8728d87..2d708f3b23 100755
--- a/lib/common/options.js
+++ b/lib/common/options.js
@@ -77,51 +77,57 @@ Options.from = function (_options) {
   // 1. Check if it is explicitly disabled by false value
   // ... Disable all postcss loaders
   // 2. Check if any standard source of postcss config exists
-  // ... Make postcss = true letting loaders find this kind of config
+  // ... Make postcss = { config: { path } }
   // 3. Else (Easy Usage)
   // ... Auto merge it with defaults
   if (options.build.postcss !== false) {
     // Detect postcss config existence
     // https://github.com/michael-ciniawsky/postcss-load-config
-    let postcssConfigExists = false
+    let postcssConfigPath
     for (let dir of [options.srcDir, options.rootDir]) {
       for (let file of ['postcss.config.js', '.postcssrc.js', '.postcssrc', '.postcssrc.json', '.postcssrc.yaml']) {
         if (existsSync(resolve(dir, file))) {
-          postcssConfigExists = true
+          postcssConfigPath = resolve(dir, file)
           break
         }
       }
-      if (postcssConfigExists) break
+      if (postcssConfigPath) break
     }
 
     // Default postcss options
-    if (postcssConfigExists) {
-      options.build.postcss = true
-    }
-
-    // Normalize & Apply default plugins
-    if (Array.isArray(options.build.postcss)) {
-      options.build.postcss = { plugins: options.build.postcss }
-    }
-    if (isPureObject(options.build.postcss)) {
-      options.build.postcss = Object.assign({
+    if (postcssConfigPath) {
+      options.build.postcss = {
         sourceMap: options.build.cssSourceMap,
-        plugins: {
-          // https://github.com/postcss/postcss-import
-          'postcss-import': {
-            root: options.rootDir,
-            path: [
-              options.srcDir,
-              options.rootDir,
-              options.modulesDir
-            ]
-          },
-          // https://github.com/postcss/postcss-url
-          'postcss-url': {},
-          // http://cssnext.io/postcss
-          'postcss-cssnext': {}
+        // https://github.com/postcss/postcss-loader/blob/master/lib/index.js#L79
+        config: {
+          path: postcssConfigPath
         }
-      }, options.build.postcss)
+      }
+    } else {
+      // Normalize & Apply default plugins
+      if (Array.isArray(options.build.postcss)) {
+        options.build.postcss = { plugins: options.build.postcss }
+      }
+      if (isPureObject(options.build.postcss)) {
+        options.build.postcss = Object.assign({
+          sourceMap: options.build.cssSourceMap,
+          plugins: {
+            // https://github.com/postcss/postcss-import
+            'postcss-import': {
+              root: options.rootDir,
+              path: [
+                options.srcDir,
+                options.rootDir,
+                options.modulesDir
+              ]
+            },
+            // https://github.com/postcss/postcss-url
+            'postcss-url': {},
+            // http://cssnext.io/postcss
+            'postcss-cssnext': {}
+          }
+        }, options.build.postcss)
+      }
     }
   }