diff --git a/tests/mock.js b/tests/mock.js
index 660f08f4..5629dbce 100644
--- a/tests/mock.js
+++ b/tests/mock.js
@@ -15,16 +15,10 @@ mock.window = new function() {
 			insertBefore: function(node, reference) {
 				node.parentNode = this
 				var referenceIndex = this.childNodes.indexOf(reference)
-				if (referenceIndex < 0) {
-					var index = this.childNodes.indexOf(node)
-					if (index > -1) this.childNodes.splice(index, 1) 
-					this.childNodes.push(node)
-				}
-				else {
-					var index = this.childNodes.indexOf(node)
-					if (index > -1) this.childNodes.splice(index, 1)
-					this.childNodes.splice(referenceIndex, 0, node)
-				}
+				var index = this.childNodes.indexOf(node)
+				if (index > -1) this.childNodes.splice(index, 1)
+				if (referenceIndex < 0) this.childNodes.push(node)
+				else this.childNodes.splice(referenceIndex, 0, node)
 			},
 			insertAdjacentHTML: function(position, html) {
 				//todo: accept markup