diff --git a/kasmweb/core/display.js b/kasmweb/core/display.js
index cdb9840..46d0861 100644
--- a/kasmweb/core/display.js
+++ b/kasmweb/core/display.js
@@ -355,7 +355,7 @@ export default class Display {
 
     imageRect(x, y, w, h, mime, arr) {
         /* The internal logic cannot handle empty images, so bail early */
-        if ((width === 0) || (height === 0)) {
+        if ((w === 0) || (h === 0)) {
             return;
         }
 
diff --git a/kasmweb/core/rfb.js b/kasmweb/core/rfb.js
index cd7d73e..77186e6 100644
--- a/kasmweb/core/rfb.js
+++ b/kasmweb/core/rfb.js
@@ -79,7 +79,7 @@ export default class RFB extends EventTargetMixin {
         this._rfbCredentials = options.credentials || {};
         this._shared = 'shared' in options ? !!options.shared : true;
         this._repeaterID = options.repeaterID || '';
-        this._wsProtocols = options.wsProtocols || [];
+        this._wsProtocols = options.wsProtocols || ['binary'];
 
         // Internal state
         this._rfbConnectionState = '';
@@ -1603,7 +1603,7 @@ export default class RFB extends EventTargetMixin {
             encs.push(encodings.pseudoEncodingCursor);
         }
 
-        if (supportsCursorURIs() && this._fb_depth == 24){
+        if (supportsCursorURIs && this._fb_depth == 24){
             // Allow the user to attempt using a local cursor even if they are using a touch device.  KASM-395
             if (this.preferLocalCursor || !isTouchDevice){
                 encs.push(encodings.pseudoEncodingCursor)