diff --git a/index.js b/index.js
index 694f7843..efee5081 100644
--- a/index.js
+++ b/index.js
@@ -571,12 +571,8 @@ function buildArray (context, location) {
     `
   }
 
-  if (largeArrayMechanism !== 'default') {
-    if (largeArrayMechanism === 'json-stringify') {
-      functionCode += `if (arrayLength && arrayLength >= ${largeArraySize}) return JSON.stringify(obj)\n`
-    } else {
-      throw new Error(`Unsupported large array mechanism ${largeArrayMechanism}`)
-    }
+  if (largeArrayMechanism === 'json-stringify') {
+    functionCode += `if (arrayLength && arrayLength >= ${largeArraySize}) return JSON.stringify(obj)\n`
   }
 
   functionCode += `
@@ -663,8 +659,6 @@ function buildArrayTypeCondition (type, accessor) {
           return buildArrayTypeCondition(subType, accessor)
         })
         condition = `(${conditions.join(' || ')})`
-      } else {
-        throw new Error(`${type} unsupported`)
       }
   }
   return condition
diff --git a/test/integer.test.js b/test/integer.test.js
index 78ac9ac3..c4a2415a 100644
--- a/test/integer.test.js
+++ b/test/integer.test.js
@@ -35,6 +35,18 @@ test('render a float as an integer', (t) => {
   }
 })
 
+test('throws on NaN', (t) => {
+  t.plan(1)
+
+  const schema = {
+    title: 'integer',
+    type: 'integer'
+  }
+
+  const stringify = build(schema)
+  t.throws(() => stringify(NaN), new Error('The value "NaN" cannot be converted to an integer.'))
+})
+
 test('render a float as an integer', (t) => {
   const cases = [
     { input: Math.PI, output: '3' },