diff --git a/src/Schemas/updateParameterValueBody.ts b/src/Schemas/updateParameterValueBody.ts
index 2f3288cc581bdfc574f56617e759aebe5376196d..b7e27a9238b95232c7938e75bcf13e13ff179684 100644
--- a/src/Schemas/updateParameterValueBody.ts
+++ b/src/Schemas/updateParameterValueBody.ts
@@ -1,7 +1,10 @@
 const updateParameterValueBody = {
   type: 'object' as const,
-  required: ['parameters, parameterType'],
+  required: ['parameters', 'parameterType'],
   properties: {
+    parameterType: {
+      type: 'string' as const,
+    },
     parameters: {
       type: 'array' as const,
       items: {