diff --git a/libraries/ParserCSV.inc b/libraries/ParserCSV.inc
index 5380201..6e33071 100644
--- a/libraries/ParserCSV.inc
+++ b/libraries/ParserCSV.inc
@@ -359,11 +359,13 @@ class ParserCSV {
    *   Thrown when a given encoding does not match.
    */
   public function fixEncoding($data) {
-    if ($this->useMbString && $this->toEncoding != $this->fromEncoding) {
+    if ($this->useMbString) {
       if (mb_check_encoding($data, $this->fromEncoding)) {
-        // Convert encoding. The conversion is to UTF-8 by default to prevent
-        // SQL errors.
-        $data = mb_convert_encoding($data, $this->toEncoding, $this->fromEncoding);
+        if ($this->toEncoding != $this->fromEncoding) {
+          // Convert encoding. The conversion is to UTF-8 by default to prevent
+          // SQL errors.
+          $data = mb_convert_encoding($data, $this->toEncoding, $this->fromEncoding);
+        }
       }
       else {
         throw new ParserCSVEncodingException(t('Source file is not in %encoding encoding.', array('%encoding' => $this->fromEncoding)));