diff --git a/class/ReportBuilder.php b/class/ReportBuilder.php
index e222be5..0a69ef6 100644
--- a/class/ReportBuilder.php
+++ b/class/ReportBuilder.php
@@ -46,7 +46,7 @@ class TeXUtils
     }
 
     static public function escape(string $str) : string {
-        return preg_replace("/([$#%&_~])/", "\\\\$1", $str);
+        return preg_replace("/([$#%&_~^])/", "\\\\$1", $str);
     }
 }