diff --git a/UPGRADE.txt b/UPGRADE.txt
index d8e699bb8c9fd331f0eab307fe9aea28b84d7954..bb0263a24df59c6e18383b23ac9e7ffd1e09b62b 100644
--- a/UPGRADE.txt
+++ b/UPGRADE.txt
@@ -14,9 +14,9 @@ Prior to upgrading, you should ensure that:
 
 Let's begin!
 
-1.  Back up your Drupal database and site root directory. Be especially sure 
-    to back up your "sites" directory which contains your configuration file, 
-    added modules and themes, and your site's uploaded files. If other files 
+1.  Back up your Drupal database and site root directory. Be especially sure
+    to back up your "sites" directory which contains your configuration file,
+    added modules and themes, and your site's uploaded files. If other files
     have modifications, such as .htaccess or robots.txt, back those up as well.
 
     Note: for a single site setup, the configuration file is the "settings.php"
diff --git a/includes/common.inc b/includes/common.inc
index 8c27dba4074de751795198db82f2ccb03057b745..211695c8e96a22dbe6bf90d0fbaafcd6eb240c59 100644
--- a/includes/common.inc
+++ b/includes/common.inc
@@ -4649,7 +4649,7 @@ function drupal_cron_cleanup() {
 
 /**
  * Returns information about system object files (modules, themes, etc.).
- * 
+ *
  * This function is used to find all or some system object files (module files,
  * theme files, etc.) that exist on the site. It searches in several locations,
  * depending on what type of object you are looking for. For instance, if you
diff --git a/includes/update.inc b/includes/update.inc
index ff641a92596c51e09b77957572ab5bd9cfd4b66b..f3df774cc401543218c66827a14eb738143afe31 100644
--- a/includes/update.inc
+++ b/includes/update.inc
@@ -115,7 +115,7 @@ function update_prepare_d7_bootstrap() {
     print $message . '<p>See the <a href="http://drupal.org/requirements">system requirements page</a> for more information.</p>';
     exit();
   }
-  
+
   // Allow the database system to work even if the registry has not been
   // created yet.
   drupal_bootstrap(DRUPAL_BOOTSTRAP_DATABASE);
diff --git a/modules/simpletest/tests/module_test.file.inc b/modules/simpletest/tests/module_test.file.inc
index a27749cb896214bfccd77c49e59ad02d61afcd6c..f3c354f35b8c08a3a3f833f6131ac8cfa9e3da77 100644
--- a/modules/simpletest/tests/module_test.file.inc
+++ b/modules/simpletest/tests/module_test.file.inc
@@ -11,4 +11,4 @@
  */
 function module_test_test_hook() {
 
-}
\ No newline at end of file
+}
diff --git a/modules/system/system-messages.css b/modules/system/system-messages.css
index 90d43d07df5994a2e4b5fbd3725940e59515f173..e68b0b8aa2f7e3bfb28f0f17d51f53478f4b40bb 100644
--- a/modules/system/system-messages.css
+++ b/modules/system/system-messages.css
@@ -33,4 +33,4 @@ div.ok,
 tr.ok {
   background-color: #dfd;
   color: #020;
-}
\ No newline at end of file
+}
diff --git a/sites/default/default.settings.php b/sites/default/default.settings.php
index b219e67a8a949f3443199cb38355b8f172cd58d6..4ec87892bda1231e1b7c4eb9bcf5f81b4fcc5be1 100644
--- a/sites/default/default.settings.php
+++ b/sites/default/default.settings.php
@@ -133,7 +133,7 @@
  *
  * You can also use db_prefix as a reference to a schema/database. This maybe
  * useful if your Drupal installation exists in a schema that is not the default
- * or you want to access several databases from the same code base at the same 
+ * or you want to access several databases from the same code base at the same
  * time.
  * Example:
  *