diff --git a/core/variables.ts b/core/variables.ts
index 75f0c3cf88..5d60b475b1 100644
--- a/core/variables.ts
+++ b/core/variables.ts
@@ -92,6 +92,11 @@ export function allDeveloperVariables(workspace: Workspace): string[] {
  * @returns Array of XML elements.
  */
 export function flyoutCategory(workspace: WorkspaceSvg): Element[] {
+  if (!Blocks['variables_set'] && !Blocks['variables_get']) {
+    console.warn(
+      'There are no variable blocks, but there is a variable category.',
+    );
+  }
   let xmlList = new Array<Element>();
   const button = document.createElement('button');
   button.setAttribute('text', '%{BKY_NEW_VARIABLE}');
diff --git a/core/variables_dynamic.ts b/core/variables_dynamic.ts
index 8dc691d3a1..6722f8b49f 100644
--- a/core/variables_dynamic.ts
+++ b/core/variables_dynamic.ts
@@ -76,6 +76,11 @@ export const onCreateVariableButtonClick_Colour = colourButtonClickHandler;
  * @returns Array of XML elements.
  */
 export function flyoutCategory(workspace: WorkspaceSvg): Element[] {
+  if (!Blocks['variables_set_dynamic'] && !Blocks['variables_get_dynamic']) {
+    console.warn(
+      'There are no dynamic variable blocks, but there is a dynamic variable category.',
+    );
+  }
   let xmlList = new Array<Element>();
   let button = document.createElement('button');
   button.setAttribute('text', Msg['NEW_STRING_VARIABLE']);