diff --git a/curriculum/structure/superblocks/full-stack-developer.json b/curriculum/structure/superblocks/full-stack-developer.json
index ff58740f359..0b7b6bf44d4 100644
--- a/curriculum/structure/superblocks/full-stack-developer.json
+++ b/curriculum/structure/superblocks/full-stack-developer.json
@@ -409,7 +409,6 @@
             "lab-html-entitiy-converter",
             "lab-odd-fibonacci-sum-calculator",
             "lab-element-skipper",
-            "lab-optional-arguments-sum-function",
             "review-javascript-fundamentals",
             "quiz-javascript-fundamentals"
           ]
@@ -559,6 +558,7 @@
           "blocks": [
             "lecture-understanding-functional-programming",
             "workshop-recipe-ingredient-converter",
+            "lab-optional-arguments-sum-function",
             "lab-sorting-visualizer",
             "review-javascript-functional-programming",
             "quiz-javascript-functional-programming"
diff --git a/curriculum/structure/superblocks/javascript-v9.json b/curriculum/structure/superblocks/javascript-v9.json
index f5518837864..be00f50c28e 100644
--- a/curriculum/structure/superblocks/javascript-v9.json
+++ b/curriculum/structure/superblocks/javascript-v9.json
@@ -132,7 +132,6 @@
             "lab-html-entitiy-converter",
             "lab-odd-fibonacci-sum-calculator",
             "lab-element-skipper",
-            "lab-optional-arguments-sum-function",
             "review-javascript-fundamentals",
             "quiz-javascript-fundamentals"
           ]
@@ -298,6 +297,7 @@
           "blocks": [
             "lecture-understanding-functional-programming",
             "workshop-recipe-ingredient-converter",
+            "lab-optional-arguments-sum-function",
             "lab-sorting-visualizer",
             "review-javascript-functional-programming",
             "quiz-javascript-functional-programming"