diff --git a/src/lib/make-toolbox-xml.js b/src/lib/make-toolbox-xml.js
index d7d3560e18debac6fdc094fab243b2bccd546355..a159f41dd74f4f4c197ff466b386ce0743fe359c 100644
--- a/src/lib/make-toolbox-xml.js
+++ b/src/lib/make-toolbox-xml.js
@@ -461,6 +461,7 @@ const sensing = function (isStage) {
         ${blockSeparator}
         <block id="current" type="sensing_current"/>
         <block type="sensing_dayssince2000"/>
+        ${blockSeparator}
         <block type="sensing_username"/>
         ${categorySeparator}
     </category>
diff --git a/src/lib/opcode-labels.js b/src/lib/opcode-labels.js
index e877a2a51290d29f33534b0c5e8cccf589bae312..b167a07e524ff735e25949871688b6555281b72c 100644
--- a/src/lib/opcode-labels.js
+++ b/src/lib/opcode-labels.js
@@ -60,6 +60,10 @@ const opcodeMap = {
         category: 'sensing',
         label: 'loudness'
     },
+    sensing_username: {
+        category: 'sensing',
+        label: 'username'
+    },
     sensing_current: {
         category: 'sensing',
         labelFn: params => {