diff --git a/src/core/plugins/samples/fn.js b/src/core/plugins/samples/fn.js
index e7d8d47f..751b6166 100644
--- a/src/core/plugins/samples/fn.js
+++ b/src/core/plugins/samples/fn.js
@@ -332,14 +332,14 @@ export const inferSchema = (thing) => {
   return thing // Hopefully this will have something schema like in it... `type` for example
 }
 
-export const createXMLExample = (schema, config={}, o) => {
+export const createXMLExample = (schema, config, o) => {
   const json = sampleFromSchemaGeneric(schema, config, o, true)
   if (!json) { return }
 
   return XML(json, { declaration: true, indent: "\t" })
 }
 
-export const sampleFromSchema = (schema, config={}, o) =>
+export const sampleFromSchema = (schema, config, o) =>
   sampleFromSchemaGeneric(schema, config, o, false)
 
 export const memoizedCreateXMLExample = memoizee(createXMLExample)
diff --git a/test/unit/core/plugins/samples/fn.js b/test/unit/core/plugins/samples/fn.js
index 353cc0e3..ae95076b 100644
--- a/test/unit/core/plugins/samples/fn.js
+++ b/test/unit/core/plugins/samples/fn.js
@@ -1,5 +1,5 @@
 import { fromJS } from "immutable"
-import { createXMLExample, sampleFromSchema } from "corePlugins/samples/fn"
+import { createXMLExample, sampleFromSchema, memoizedCreateXMLExample, memoizedSampleFromSchema } from "corePlugins/samples/fn"
 
 describe("sampleFromSchema", () => {
   it("handles Immutable.js objects for nested schemas", function () {
@@ -1457,3 +1457,64 @@ describe("createXMLExample", function () {
     })
   })
 })
+
+describe("memoizedSampleFromSchema", () => {
+  it("should sequentially update memoized overrideExample", () => {
+    const definition = {
+      type: "object",
+      properties: {
+        foo: {
+          type: "string"
+        }
+      },
+      example: {
+        foo: null
+      }
+    }
+
+    const expected = {
+      foo: "override"
+    }
+    expect(memoizedSampleFromSchema(definition, {}, expected)).toEqual(expected)
+
+    const updatedExpected = {
+      foo: "cat"
+    }
+    expect(memoizedSampleFromSchema(definition, {}, updatedExpected)).toEqual(updatedExpected)
+  })
+})
+
+describe("memoizedCreateXMLExample", () => {
+  it("should sequentially update memoized overrideExample", () => {
+    const expected = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<bar>\n\t<foo>override</foo>\n</bar>"
+
+    const definition = {
+      type: "object",
+      properties: {
+        foo: {
+          type: "string",
+          xml: {
+            name: "foo"
+          }
+        }
+      },
+      example: {
+        foo: null
+      },
+      xml: {
+        name: "bar"
+      }
+    }
+
+    const overrideExample = {
+      foo: "override"
+    }
+    expect(memoizedCreateXMLExample(definition, {}, overrideExample)).toEqual(expected)
+
+    const updatedOverrideExample = {
+      foo: "cat"
+    }
+    const updatedExpected = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<bar>\n\t<foo>cat</foo>\n</bar>"
+    expect(memoizedCreateXMLExample(definition, {}, updatedOverrideExample)).toEqual(updatedExpected)
+  })
+})