diff --git a/includes/database/mysql/database.inc b/includes/database/mysql/database.inc
index e024a7f..7278a2b 100644
--- a/includes/database/mysql/database.inc
+++ b/includes/database/mysql/database.inc
@@ -46,8 +46,6 @@ class DatabaseConnection_mysql extends DatabaseConnection {
       PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => TRUE,
       // Because MySQL's prepared statements skip the query cache, because it's dumb.
       PDO::ATTR_EMULATE_PREPARES => TRUE,
-      // Force column names to lower case.
-      PDO::ATTR_CASE => PDO::CASE_LOWER,
     );
 
     parent::__construct($dsn, $connection_options['username'], $connection_options['password'], $connection_options['pdo']);
diff --git a/includes/database/mysql/schema.inc b/includes/database/mysql/schema.inc
index 4e88fa1..7268f2d 100644
--- a/includes/database/mysql/schema.inc
+++ b/includes/database/mysql/schema.inc
@@ -381,7 +381,7 @@ class DatabaseSchema_mysql extends DatabaseSchema {
     // Returns one row for each column in the index. Result is string or FALSE.
     // Details at http://dev.mysql.com/doc/refman/5.0/en/show-index.html
     $row = $this->connection->query('SHOW INDEX FROM {' . $table . "} WHERE key_name = '$name'")->fetchAssoc();
-    return isset($row['key_name']);
+    return isset($row['Key_name']);
   }
 
   public function addPrimaryKey($table, $fields) {
diff --git a/includes/database/pgsql/database.inc b/includes/database/pgsql/database.inc
index d42a1cc..d80b475 100644
--- a/includes/database/pgsql/database.inc
+++ b/includes/database/pgsql/database.inc
@@ -62,8 +62,6 @@ class DatabaseConnection_pgsql extends DatabaseConnection {
       PDO::ATTR_EMULATE_PREPARES => TRUE,
       // Convert numeric values to strings when fetching.
       PDO::ATTR_STRINGIFY_FETCHES => TRUE,
-      // Force column names to lower case.
-      PDO::ATTR_CASE => PDO::CASE_LOWER,
     );
     parent::__construct($dsn, $connection_options['username'], $connection_options['password'], $connection_options['pdo']);
 
diff --git a/includes/database/sqlite/database.inc b/includes/database/sqlite/database.inc
index b4e41b5..ea91e91 100644
--- a/includes/database/sqlite/database.inc
+++ b/includes/database/sqlite/database.inc
@@ -37,7 +37,7 @@ class DatabaseConnection_sqlite extends DatabaseConnection {
   /**
    * All databases attached to the current database. This is used to allow
    * prefixes to be safely handled without locking the table
-   * 
+   *
    * @var array
    */
   protected $attachedDatabases = array();
@@ -46,10 +46,10 @@ class DatabaseConnection_sqlite extends DatabaseConnection {
    * Whether or not a table has been dropped this request: the destructor will
    * only try to get rid of unnecessary databases if there is potential of them
    * being empty.
-   * 
+   *
    * This variable is set to public because DatabaseSchema_sqlite needs to
    * access it. However, it should not be manually set.
-   * 
+   *
    * @var boolean
    */
   var $tableDropped = FALSE;
@@ -68,8 +68,6 @@ class DatabaseConnection_sqlite extends DatabaseConnection {
       'pdo' => array(),
     );
     $connection_options['pdo'] += array(
-      // Force column names to lower case.
-      PDO::ATTR_CASE => PDO::CASE_LOWER,
       // Convert numeric values to strings when fetching.
       PDO::ATTR_STRINGIFY_FETCHES => TRUE,
     );