diff --git a/src/screens/Job/generateJobDefinition.test.ts b/src/screens/Job/generateJobDefinition.test.ts
index 90aa7db..7d21497 100644
--- a/src/screens/Job/generateJobDefinition.test.ts
+++ b/src/screens/Job/generateJobDefinition.test.ts
@@ -718,4 +718,47 @@ streamID = "1001"
     const output = generateJobDefinition(job)
     expect(output.definition).toEqual(expectedOutput)
   })
+
+  it('generates an empty definition for unspecified type', () => {
+    const job: JobPayload_Fields = {
+      id: '',
+      name: '',
+      externalJobID: '',
+      observationSource: '',
+      createdAt: undefined,
+      schemaVersion: 0,
+      type: '',
+      maxTaskDuration: '',
+      spec: {
+        __typename: <any>'Undefined',
+        coordinatorV1Address: undefined,
+        coordinatorV2Address: undefined,
+        waitBlocks: 0,
+        lookbackBlocks: 0,
+        blockhashStoreAddress: '',
+        batchBlockhashStoreAddress: '',
+        pollPeriod: '',
+        runTimeout: '',
+        evmChainID: undefined,
+        fromAddresses: undefined,
+        getBlockhashesBatchSize: 0,
+        storeBlockhashesBatchSize: 0,
+        coordinatorV2PlusAddress: undefined
+      },
+      runs: {
+        __typename: undefined,
+        results: [],
+        metadata: {
+          __typename: undefined,
+          total: 0
+        }
+      },
+      errors: []
+    }
+
+    const expectedOutput = ``
+
+    const output = generateJobDefinition(job)
+    expect(output.definition).toEqual(expectedOutput)
+  })
 })