diff --git a/src/extensions/scratch3_microbit/index.js b/src/extensions/scratch3_microbit/index.js
index 89a5036c7..6af8e1afb 100644
--- a/src/extensions/scratch3_microbit/index.js
+++ b/src/extensions/scratch3_microbit/index.js
@@ -783,7 +783,7 @@ class Scratch3MicroBitBlocks {
      * @return {Promise} - a Promise that resolves after a tick.
      */
     displaySymbol (args) {
-        const symbol = cast.toString(args.MATRIX);
+        const symbol = cast.toString(args.MATRIX).replace(/\s/g, '');
         const reducer = (accumulator, c, index) => {
             const value = (c === '0') ? accumulator : accumulator + Math.pow(2, index);
             return value;