diff --git a/packages/vue-cli-plugin-uni/commands/build.js b/packages/vue-cli-plugin-uni/commands/build.js
index 9fc3f402e7a9633baf3cd25960755da9c0e2771e..cad7e5941465d2118a24ec8eb820f8a9f8920d5e 100644
--- a/packages/vue-cli-plugin-uni/commands/build.js
+++ b/packages/vue-cli-plugin-uni/commands/build.js
@@ -73,7 +73,7 @@ module.exports = (api, options) => {
 
     process.env.VUE_CLI_BUILD_TARGET = args.target
 
-    if (args['sourcemap']) process.env.SOURCEMAP = args['sourcemap']
+    if (args.sourcemap) process.env.SOURCEMAP = args.sourcemap
 
     await build(args, api, options)
 
diff --git a/packages/vue-cli-plugin-uni/lib/commands/custom.js b/packages/vue-cli-plugin-uni/lib/commands/custom.js
index 1718edb17aa13c3335497cc274cb75530792a848..f67c43d9d9848ba3472b9cedabce604dfdf1abf5 100644
--- a/packages/vue-cli-plugin-uni/lib/commands/custom.js
+++ b/packages/vue-cli-plugin-uni/lib/commands/custom.js
@@ -34,7 +34,7 @@ module.exports = function custom (argv) {
     clean: false,
     subpackage: argv.subpackage,
     plugin: argv.plugin,
-    sourcemap: argv['sourcemap'],
+    sourcemap: argv.sourcemap
   }).catch(err => {
     console.error(err)
     process.exit(1)
diff --git a/packages/vue-cli-plugin-uni/lib/configure-webpack.js b/packages/vue-cli-plugin-uni/lib/configure-webpack.js
index e49b473a44ac05a75fde62bf1fb73fb9cc726d9a..c71ec2b69fc074946eed4741098f9af9e42aac75 100644
--- a/packages/vue-cli-plugin-uni/lib/configure-webpack.js
+++ b/packages/vue-cli-plugin-uni/lib/configure-webpack.js
@@ -289,8 +289,7 @@ module.exports = function configureWebpack (platformOptions, manifestPlatformOpt
           noSources: true,
           append: false
         }
-        if (isInHBuilderX && process.env.SOURCEMAP_PATH)
-        sourceMapOptions.filename = process.env.SOURCEMAP_PATH
+        if (isInHBuilderX && process.env.SOURCEMAP_PATH) { sourceMapOptions.filename = process.env.SOURCEMAP_PATH }
         if (useEvalSourceMap || useSourceMap) {
           plugins.push(sourceMap.createSourceMapDevToolPlugin(!sourceMapOptions.filename, sourceMapOptions))
         }
@@ -302,7 +301,7 @@ module.exports = function configureWebpack (platformOptions, manifestPlatformOpt
         }
       }
     }
-    
+
     try {
       if (process.env.UNI_HBUILDERX_PLUGINS) {
         require(path.resolve(process.env.UNI_HBUILDERX_PLUGINS, 'uni_helpers/lib/bytenode'))