diff --git a/strassenkind.php b/strassenkind.php
index 87b329e..51c1bcf 100644
--- a/strassenkind.php
+++ b/strassenkind.php
@@ -50,7 +50,7 @@ $git_commands = get_command_list("commands_git.conf");
             $command = $command . " 2>&1";
           }
           $output = shell_exec($command);
-          echo "<pre class=\"commandLine\"> $command </pre>\n<pre class=\"commandLine\"> $output </pre>\n<hr />";
+          echo "<pre class=\"commandLine\"> " . htmlspecialchars($command, $flags=ENT_DISALLOWED | ENT_HTML5 | ENT_QUOTES, $encoding="UTF-8") . " </pre>\n<pre class=\"commandLine\"> " . htmlspecialchars($output, $flags=ENT_DISALLOWED | ENT_HTML5 | ENT_QUOTES, $encoding="UTF-8") . " </pre>\n<hr />";
         }
       }