diff --git a/lib/units/device/plugins/vnc/index.js b/lib/units/device/plugins/vnc/index.js
index ca3d671a..043046a1 100644
--- a/lib/units/device/plugins/vnc/index.js
+++ b/lib/units/device/plugins/vnc/index.js
@@ -238,7 +238,7 @@ module.exports = syrup.serial()
           })
 
           conn.on('formatchange', function(format) {
-            var same = os.endianness() === 'BE' === format.bigEndianFlag
+            var same = os.endianness() === 'BE' === !!format.bigEndianFlag
             switch (format.bitsPerPixel) {
             case 8:
               connState.frameConfig = {