diff --git a/src/Spout/Common/Escaper/XLSX.php b/src/Spout/Common/Escaper/XLSX.php
index 7c6c61b..d11e535 100644
--- a/src/Spout/Common/Escaper/XLSX.php
+++ b/src/Spout/Common/Escaper/XLSX.php
@@ -124,6 +124,10 @@ class XLSX implements EscaperInterface
      */
     protected function escapeControlCharacters($string)
     {
+        if (1 !== preg_match('~[^A-Za-z0-9\-.:, ]~', $string)) {
+            return $string;
+        }
+
         $escapedString = $this->escapeEscapeCharacter($string);
 
         // if no control characters