diff --git a/index.js b/index.js
index 5ba331a..ee35acb 100644
--- a/index.js
+++ b/index.js
@@ -7,7 +7,7 @@ var clamp = require('clamp')
 module.exports = toNumber
 
 function toNumber (rgba, normalized) {
-	if(!normalized) normalized = true
+	if(normalized == null) normalized = true
 
 	var r = rgba[0], g = rgba[1], b = rgba[2], a = rgba[3]
 
diff --git a/test.js b/test.js
index 6c400e6..0c346e4 100644
--- a/test.js
+++ b/test.js
@@ -1,6 +1,7 @@
 const toNumber = require('./')
 const assert = require('assert')
 
+assert.notEqual(toNumber([31, 47, 185, 178.5], false), toNumber([36, 54, 188, 178.5], false))
 assert.equal(toNumber([0,0,0,0]), 0)
 assert.equal(toNumber([1,1,1,1]), 0xffffffff)
 assert.equal(toNumber([0,0,0,1]), 0x000000ff)