Remove a space :)
diff --git a/system/core/URI.php b/system/core/URI.php
index 93105b1..eaf7b75 100755
--- a/system/core/URI.php
+++ b/system/core/URI.php
@@ -497,7 +497,7 @@
 		$temp = array();
 		foreach ((array)$array as $key => $val)
 		{
-			$temp[]  = $key;
+			$temp[] = $key;
 			$temp[] = $val;
 		}