diff --git a/webapp/src/components/tutorialValidators.tsx b/webapp/src/components/tutorialValidators.tsx
index fe4c46b734ff..7fe137127a12 100644
--- a/webapp/src/components/tutorialValidators.tsx
+++ b/webapp/src/components/tutorialValidators.tsx
@@ -64,6 +64,7 @@ export class BlocksExistValidator extends CodeValidatorBase {
         const {
             missingBlocks,
             disabledBlocks,
+            insufficientBlocks
         } = pxt.blocks.validateBlocksExist({
             usedBlocks: editor.getAllBlocks(false /* ordered */),
             requiredBlockCounts: stepHighlights,
@@ -81,6 +82,9 @@ export class BlocksExistValidator extends CodeValidatorBase {
         } else if (disabledBlocks.length > 0) {
             isValid = false;
             errorDescription = lf("Make sure your blocks are connected to the rest of your code like this.");
+        } else if (insufficientBlocks.length > 0) {
+            isValid = false;
+            errorDescription = lf("Make sure you have enough blocks and that they're connected to the rest of your code. It should look like this.");
         }
 
         const blockImages = stepInfo?.hintContentMd ? (<div>