diff --git a/packages/electron-builder/src/asarUtil.ts b/packages/electron-builder/src/asarUtil.ts
index 0a7f74be83c..e356922004a 100644
--- a/packages/electron-builder/src/asarUtil.ts
+++ b/packages/electron-builder/src/asarUtil.ts
@@ -143,21 +143,25 @@ export class AsarPackager {
         continue
       }
 
-      const nextSlashIndex = file.indexOf(path.sep, index + NODE_MODULES_PATTERN.length + 1)
+      let nextSlashIndex = file.indexOf(path.sep, index + NODE_MODULES_PATTERN.length + 1)
       if (nextSlashIndex < 0) {
         continue
       }
 
+      if (file[index + NODE_MODULES_PATTERN.length] === "@") {
+        nextSlashIndex = file.indexOf(path.sep, nextSlashIndex + 1)
+      }
+
       if (!metadata.get(file)!.isFile()) {
         continue
       }
 
-      const nodeModuleDir = file.substring(0, nextSlashIndex)
-      if (autoUnpackDirs.has(nodeModuleDir)) {
+      const packageDir = file.substring(0, nextSlashIndex)
+      if (autoUnpackDirs.has(packageDir)) {
         const fileParent = path.dirname(file)
-        if (fileParent !== nodeModuleDir && !autoUnpackDirs.has(fileParent)) {
+        if (fileParent !== packageDir && !autoUnpackDirs.has(fileParent)) {
           autoUnpackDirs.add(fileParent)
-          addValue(dirToCreate, path.relative(this.src, nodeModuleDir), path.relative(nodeModuleDir, fileParent))
+          addValue(dirToCreate, path.relative(this.src, packageDir), path.relative(packageDir, fileParent))
         }
         continue
       }
@@ -175,18 +179,18 @@ export class AsarPackager {
         continue
       }
 
-      debug(`${path.relative(this.src, nodeModuleDir)} is not packed into asar archive - contains executable code`)
+      debug(`${path.relative(this.src, packageDir)} is not packed into asar archive - contains executable code`)
 
       let fileParent = path.dirname(file)
 
       // create parent dir to be able to copy file later without directory existence check
-      addValue(dirToCreate, path.relative(this.src, nodeModuleDir), path.relative(nodeModuleDir, fileParent))
+      addValue(dirToCreate, path.relative(this.src, packageDir), path.relative(packageDir, fileParent))
 
-      while (fileParent !== nodeModuleDir) {
+      while (fileParent !== packageDir) {
         autoUnpackDirs.add(fileParent)
         fileParent = path.dirname(fileParent)
       }
-      autoUnpackDirs.add(nodeModuleDir)
+      autoUnpackDirs.add(packageDir)
     }
     
     if (dirToCreate.size > 0) {
diff --git a/test/out/__snapshots__/BuildTest.js.snap b/test/out/__snapshots__/BuildTest.js.snap
index 754124f87ac..66ba5ec6e9a 100644
--- a/test/out/__snapshots__/BuildTest.js.snap
+++ b/test/out/__snapshots__/BuildTest.js.snap
@@ -272,6 +272,44 @@ Object {
 }
 `;
 
+exports[`smart unpack 2`] = `
+Array [
+  "app.asar",
+  "electron.asar",
+  "app.asar.unpacked",
+  "app.asar.unpacked/node_modules",
+  "app.asar.unpacked/node_modules/edge-cs",
+  "app.asar.unpacked/node_modules/edge-cs/LICENSE.txt",
+  "app.asar.unpacked/node_modules/edge-cs/package.json",
+  "app.asar.unpacked/node_modules/edge-cs/tools",
+  "app.asar.unpacked/node_modules/edge-cs/tools/install.js",
+  "app.asar.unpacked/node_modules/edge-cs/src",
+  "app.asar.unpacked/node_modules/edge-cs/src/edge-cs",
+  "app.asar.unpacked/node_modules/edge-cs/src/edge-cs/EdgeCompiler.cs",
+  "app.asar.unpacked/node_modules/edge-cs/src/edge-cs/edge-cs.csproj",
+  "app.asar.unpacked/node_modules/edge-cs/src/edge-cs/edge-cs.sln",
+  "app.asar.unpacked/node_modules/edge-cs/src/edge-cs/Properties",
+  "app.asar.unpacked/node_modules/edge-cs/src/edge-cs/Properties/AssemblyInfo.cs",
+  "app.asar.unpacked/node_modules/edge-cs/src/Edge.js.CSharp",
+  "app.asar.unpacked/node_modules/edge-cs/src/Edge.js.CSharp/EdgeCompiler.cs",
+  "app.asar.unpacked/node_modules/edge-cs/src/Edge.js.CSharp/edge-cs-coreclr.sln",
+  "app.asar.unpacked/node_modules/edge-cs/src/Edge.js.CSharp/edge-cs-coreclr.xproj",
+  "app.asar.unpacked/node_modules/edge-cs/src/Edge.js.CSharp/gulpfile.js",
+  "app.asar.unpacked/node_modules/edge-cs/src/Edge.js.CSharp/package.json",
+  "app.asar.unpacked/node_modules/edge-cs/src/Edge.js.CSharp/project.json",
+  "app.asar.unpacked/node_modules/edge-cs/lib",
+  "app.asar.unpacked/node_modules/edge-cs/lib/edge-cs.dll",
+  "app.asar.unpacked/node_modules/edge-cs/lib/edge-cs.js",
+  "app.asar.unpacked/node_modules/edge-cs/lib/bootstrap",
+  "app.asar.unpacked/node_modules/edge-cs/lib/bootstrap/Dummy.cs",
+  "app.asar.unpacked/node_modules/edge-cs/lib/bootstrap/project.json",
+  "app.asar.unpacked/node_modules/@electron-builder",
+  "app.asar.unpacked/node_modules/@electron-builder/test-smart-unpack",
+  "app.asar.unpacked/node_modules/@electron-builder/test-smart-unpack/foo.dll",
+  "app.asar.unpacked/node_modules/@electron-builder/test-smart-unpack/package.json",
+]
+`;
+
 exports[`www as default dir 1`] = `
 Object {
   "linux": Array [],
diff --git a/test/src/BuildTest.ts b/test/src/BuildTest.ts
index fd9a724391a..f7b3a56eeec 100644
--- a/test/src/BuildTest.ts
+++ b/test/src/BuildTest.ts
@@ -1,5 +1,6 @@
 import BluebirdPromise from "bluebird-lst"
 import { Arch, BuildOptions, createTargets, DIR_TARGET, Platform } from "electron-builder"
+import { walk } from "electron-builder-util/out/fs"
 import { readAsarJson } from "electron-builder/out/asar"
 import { normalizeOptions } from "electron-builder/out/builder"
 import { createYargs } from "electron-builder/out/cli/cliOptions"
@@ -156,13 +157,18 @@ test.ifDevOrLinuxCi("smart unpack", app({
   projectDirCreated: packageJson(it => {
     it.dependencies = {
       "debug": "^2.2.0",
-      "edge-cs": "^1.0.0"
+      "edge-cs": "1.2.1",
+      "@electron-builder/test-smart-unpack": "1.0.0",
+      "@electron-builder/test-smart-unpack-empty": "1.0.0",
     }
   }),
   packed: async context => {
-    expect(await readAsarJson(path.join(context.getResources(Platform.LINUX), "app.asar"), "node_modules/debug/package.json")).toMatchObject({
+    const resourceDir = context.getResources(Platform.LINUX)
+    expect(await readAsarJson(path.join(resourceDir, "app.asar"), "node_modules/debug/package.json")).toMatchObject({
       name: "debug"
     })
+
+    expect((await walk(resourceDir, file => !path.basename(file).startsWith("."))).map(it => it.substring(resourceDir.length + 1))).toMatchSnapshot()
   }
 }))