Fix a typo
diff --git a/system/core/URI.php b/system/core/URI.php
index 2361ecf..3b4d2e0 100644
--- a/system/core/URI.php
+++ b/system/core/URI.php
@@ -160,7 +160,7 @@
 
 			$this->segments[0] = NULL;
 			// Populate the segments array
-			foreach (explode('/', trim($this->uri->string, '/')) as $val)
+			foreach (explode('/', trim($this->uri_string, '/')) as $val)
 			{
 				// Filter segments for security
 				$val = trim($this->filter_uri($val));