diff --git a/system/libraries/URI.php b/system/libraries/URI.php
index c3dfef1..668b1ee 100644
--- a/system/libraries/URI.php
+++ b/system/libraries/URI.php
@@ -237,7 +237,7 @@
 	 * Re-index Segments
 	 *
 	 * This function re-indexes the $this->segment array so that it
-	 * starts at 1 rather then 0.  Doing so makes it simpler to
+	 * starts at 1 rather than 0.  Doing so makes it simpler to
 	 * use functions like $this->uri->segment(n) since there is
 	 * a 1:1 relationship between the segment array and the actual segments.
 	 *
diff --git a/system/libraries/Unit_test.php b/system/libraries/Unit_test.php
index e53e04c..de2ab73 100644
--- a/system/libraries/Unit_test.php
+++ b/system/libraries/Unit_test.php
@@ -150,7 +150,7 @@
 	/**
 	 * Use strict comparison
 	 *
-	 * Causes the evaluation to use === rather then ==
+	 * Causes the evaluation to use === rather than ==
 	 *
 	 * @access	public
 	 * @param	bool