diff --git a/test/unit/blocks_procedures.js b/test/unit/blocks_procedures.js
index 5dfecea720c..0285b23d0c1 100644
--- a/test/unit/blocks_procedures.js
+++ b/test/unit/blocks_procedures.js
@@ -16,7 +16,7 @@ test('calling a custom block with no definition does not throw', t => {
         }
     };
     const util = {
-        getProcedureParamNamesAndIds: () => [null, null],
+        getProcedureParamNamesAndIds: () => null,
         stackFrame: {
             executed: false
         }