diff --git a/docs/Options.md b/docs/Options.md
index 0627d2711a0..042bda4761c 100644
--- a/docs/Options.md
+++ b/docs/Options.md
@@ -191,6 +191,7 @@ See [NSIS target notes](https://github.com/electron-userland/electron-builder/wi
 | warningsAsErrors | <a name="NsisOptions-warningsAsErrors"></a>Defaults to `true`. If `warningsAsErrors` is `true` (default): NSIS will treat warnings as errors. If `warningsAsErrors` is `false`: NSIS will allow warnings.
 | menuCategory | <a name="NsisOptions-menuCategory"></a>Whether to create submenu for start menu shortcut and program files directory. Defaults to `false`. If `true`, company name will be used. Or string value.
 | artifactName | <a name="NsisOptions-artifactName"></a>The [artifact file name pattern](https://github.com/electron-userland/electron-builder/wiki/Options#artifact-file-name-pattern). Defaults to `${productName} Setup ${version}.${ext}`.
+| unicode | <a name="NsisOptions-unicode"></a>Whether to create [Unicode installer](http://nsis.sourceforge.net/Docs/Chapter1.html#intro-unicode). Defaults to `true`.
 
 <a name="NsisWebOptions"></a>
 ### `nsis` Web Installer Specific Options
diff --git a/packages/electron-builder/src/options/winOptions.ts b/packages/electron-builder/src/options/winOptions.ts
index 465c1906090..b5229c99e84 100644
--- a/packages/electron-builder/src/options/winOptions.ts
+++ b/packages/electron-builder/src/options/winOptions.ts
@@ -150,6 +150,11 @@ export interface NsisOptions {
   The [artifact file name pattern](https://github.com/electron-userland/electron-builder/wiki/Options#artifact-file-name-pattern). Defaults to `${productName} Setup ${version}.${ext}`.
    */
   readonly artifactName?: string | null
+
+  /*
+  Whether to create [Unicode installer](http://nsis.sourceforge.net/Docs/Chapter1.html#intro-unicode). Defaults to `true`.
+   */
+  readonly unicode?: boolean
 }
 
 /*
diff --git a/packages/electron-builder/src/targets/nsis.ts b/packages/electron-builder/src/targets/nsis.ts
index a6f0799285f..df7f8b19248 100644
--- a/packages/electron-builder/src/targets/nsis.ts
+++ b/packages/electron-builder/src/targets/nsis.ts
@@ -14,9 +14,9 @@ import sanitizeFileName from "sanitize-filename"
 import { copyFile } from "electron-builder-util/out/fs"
 import { computeDownloadUrl, getPublishConfigs, getPublishConfigsForUpdateInfo } from "../publish/PublishManager"
 
-const NSIS_VERSION = "3.0.1.6"
+const NSIS_VERSION = "3.0.1.7"
 //noinspection SpellCheckingInspection
-const NSIS_SHA2 = "4bd85f3a54311fd55814ec87fbcb0ab9c64b3dea4179c891e7748df8748f87c8"
+const NSIS_SHA2 = "0e797a7099283bf9caf97ee677e1d7986278c27b39916a501480978af039817c"
 
 //noinspection SpellCheckingInspection
 const ELECTRON_BUILDER_NS_UUID = "50e065bc-3134-11e6-9bab-38c9862bdaf3"
@@ -149,7 +149,7 @@ export default class NsisTarget extends Target {
       OutFile: `"${installerPath}"`,
       VIProductVersion: appInfo.versionInWeirdWindowsForm,
       VIAddVersionKey: this.computeVersionKey(),
-      Unicode: true,
+      Unicode: options.unicode == null ? true : options.unicode,
     }
 
     if (packager.config.compression === "store") {
diff --git a/test/src/windows/nsisTest.ts b/test/src/windows/nsisTest.ts
index a47b800f7cb..602c39abfc2 100644
--- a/test/src/windows/nsisTest.ts
+++ b/test/src/windows/nsisTest.ts
@@ -20,6 +20,9 @@ test("one-click", app({
       owner: "actperepo",
       package: "TestApp",
     },
+    nsis: {
+      unicode: false,
+    }
     // wine creates incorrect filenames and registry entries for unicode, so, we use ASCII
     // productName: "TestApp",
   }