diff --git a/application/Espo/Tools/Export/Processors/Xlsx.php b/application/Espo/Tools/Export/Processors/Xlsx.php
index c4540bfe45..2d9dd1a3d7 100644
--- a/application/Espo/Tools/Export/Processors/Xlsx.php
+++ b/application/Espo/Tools/Export/Processors/Xlsx.php
@@ -850,7 +850,7 @@ class Xlsx implements Processor
             return $value;
         }
 
-        if (in_array($value, ['+', '-', '@', '='])) {
+        if (in_array($value[0], ['+', '-', '@', '='])) {
             return "'" . $value;
         }