diff --git a/src/engine/execute.js b/src/engine/execute.js
index a6273fc87..9fed7f43a 100644
--- a/src/engine/execute.js
+++ b/src/engine/execute.js
@@ -30,7 +30,12 @@ const execute = function (sequencer, thread) {
     const currentBlockId = thread.peekStack();
     const currentStackFrame = thread.peekStackFrame();
 
-    let blockContainer = target.blocks;
+    let blockContainer;
+    if (thread.updateMonitor) {
+        blockContainer = runtime.monitorBlocks;
+    } else {
+        blockContainer = target.blocks;
+    }
     let block = blockContainer.getBlock(currentBlockId);
     if (typeof block === 'undefined') {
         blockContainer = runtime.flyoutBlocks;
diff --git a/src/engine/runtime.js b/src/engine/runtime.js
index a1ab579e7..662d910d7 100644
--- a/src/engine/runtime.js
+++ b/src/engine/runtime.js
@@ -399,8 +399,8 @@ class Runtime extends EventEmitter {
      * @param {!string} id ID of block that starts the stack.
      * @param {!Target} target Target to run thread on.
      * @param {?object} opts optional arguments
-     * @param {?boolean} opts.optShowVisualReport true if the script should show speech bubble for its value
-     * @param {?boolean} opts.optUpdateMonitor true if the script should show and update a monitor with its value
+     * @param {?boolean} opts.showVisualReport true if the script should show speech bubble for its value
+     * @param {?boolean} opts.updateMonitor true if the script should show and update a monitor with its value
      * @return {!Thread} The newly created thread.
      */
     _pushThread (id, target, opts) {
@@ -411,7 +411,7 @@ class Runtime extends EventEmitter {
 
         const thread = new Thread(id);
         thread.target = target;
-        thread.showVisualReport = opts.optShowVisualReport;
+        thread.showVisualReport = opts.showVisualReport;
         thread.updateMonitor = opts.updateMonitor;
 
         thread.pushStack(id);
@@ -442,6 +442,8 @@ class Runtime extends EventEmitter {
     _restartThread (thread) {
         const newThread = new Thread(thread.topBlock);
         newThread.target = thread.target;
+        newThread.showVisualReport = thread.showVisualReport;
+        newThread.updateMonitor = thread.updateMonitor;
         newThread.pushStack(thread.topBlock);
         const i = this.threads.indexOf(thread);
         if (i > -1) {