diff --git a/engine.io.js b/engine.io.js
index 9ed4a0c61..5c4f54a8c 100644
--- a/engine.io.js
+++ b/engine.io.js
@@ -1302,11 +1302,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	      contentType = this.xhr.getResponseHeader('Content-Type');
 	    } catch (e) {}
 	    if (contentType === 'application/octet-stream') {
-	      if (this.xhr.responseType === 'arraybuffer') {
-	        data = this.xhr.response || this.xhr.responseText;
-	      } else {
-	        data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));
-	      }
+	      data = this.xhr.response || this.xhr.responseText;
+	    } else if (this.xhr.responseType === 'arraybuffer') {
+	      data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));
 	    } else {
 	      data = this.xhr.responseText;
 	    }
diff --git a/package.json b/package.json
index 4cd44caa1..010403d58 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "engine.io-client",
   "description": "Client for the realtime Engine",
   "license": "MIT",
-  "version": "3.1.5",
+  "version": "3.2.0",
   "main": "lib/index.js",
   "homepage": "https://github.com/socketio/engine.io-client",
   "contributors": [
@@ -45,7 +45,7 @@
     "concat-stream": "^1.6.0",
     "del": "^2.2.2",
     "derequire": "^2.0.6",
-    "engine.io": "3.1.5",
+    "engine.io": "3.2.0",
     "eslint-config-standard": "4.4.0",
     "eslint-plugin-standard": "1.3.1",
     "expect.js": "^0.3.1",