diff --git a/plugins/FeedsCSVParser.inc b/plugins/FeedsCSVParser.inc
index 7044440..c5f6f91 100644
--- a/plugins/FeedsCSVParser.inc
+++ b/plugins/FeedsCSVParser.inc
@@ -25,7 +25,7 @@ class FeedsCSVParser extends FeedsParser {
 
     $iterator = new ParserCSVIterator($fetcher_result->getFilePath());
     if (empty($source_config['no_headers'])) {
-      // Get first line and use it for column names, convert them to lower case.
+      // Get first line and use it for column names.
       $header = $this->parseHeader($parser, $iterator);
       if (!$header) {
         return;
@@ -49,14 +49,14 @@ class FeedsCSVParser extends FeedsParser {
   }
 
   /**
-   * Get first line and use it for column names, convert them to lower case.
+   * Get first line and use it for column names.
    * Be aware that the $parser and iterator objects can be modified in this
    * function since they are passed in by reference
    *
    * @param ParserCSV $parser
    * @param ParserCSVIterator $iterator
    * @return
-   *   An array of lower-cased column names to use as keys for the parsed items.
+   *   An array of column names to use as keys for the parsed items.
    */
   protected function parseHeader(ParserCSV $parser, ParserCSVIterator $iterator) {
     $parser->setLineLimit(1);
@@ -66,7 +66,7 @@ class FeedsCSVParser extends FeedsParser {
     }
     $header = array_shift($rows);
     foreach ($header as $i => $title) {
-      $header[$i] = trim(drupal_strtolower($title));
+      $header[$i] = trim($title);
     }
     return $header;
   }
@@ -94,13 +94,6 @@ class FeedsCSVParser extends FeedsParser {
   }
 
   /**
-   * Override parent::getSourceElement() to use only lower keys.
-   */
-  public function getSourceElement(FeedsSource $source, FeedsParserResult $result, $element_key) {
-    return parent::getSourceElement($source, $result, drupal_strtolower($element_key));
-  }
-
-  /**
    * Define defaults.
    */
   public function sourceDefaults() {