diff --git a/arcanist/linter/PythonFormatLinter.php b/arcanist/linter/PythonFormatLinter.php
index e0809b1cb..7173535dc 100644
--- a/arcanist/linter/PythonFormatLinter.php
+++ b/arcanist/linter/PythonFormatLinter.php
@@ -1,95 +1,95 @@
 <?php
 
 /**
  * Uses the lint-python-format.py script to update from old % format style to 
  * new .format().
  */
 final class PythonFormatLinter extends ArcanistExternalLinter {
 
   public function getInfoName() {
     return 'lint-python-format';
   }
 
   public function getInfoURI() {
     return '';
   }
 
   public function getInfoDescription() {
-    return pht('Convert python string formatting from % to .format().');
+    return pht('Convert python string formatting from %% to .format().');
   }
 
   public function getLinterName() {
     return 'lint-python-format';
   }
 
   public function getLinterConfigurationName() {
     return 'lint-python-format';
   }
 
   public function getLinterConfigurationOptions() {
     $options = array();
 
     return $options + parent::getLinterConfigurationOptions();
   }
 
   public function getDefaultBinary() {
     return Filesystem::resolvePath(
       'test/lint/lint-python-format.py',
       $this->getProjectRoot());
   }
   
   public function shouldUseInterpreter() {
     return true;
   }
   
   public function getDefaultInterpreter() {
     return "python3";
   }
 
   public function getInstallInstructions() {
     return pht('The test/lint/lint-python-format.py script is part of the bitcoin-abc project');
   }
 
   public function shouldExpectCommandErrors() {
     return false;
   }
 
   protected function getMandatoryFlags() {
     return array();
   }
 
   protected function parseLinterOutput($path, $err, $stdout, $stderr) {
     $pattern = '/\((\d+)\) ([\s\S]+?)=> (.+)/';
     $found = preg_match_all($pattern, $stdout, $snippets,
       $flags = PREG_SET_ORDER);
     
     /* 
      * Matched snippets $snippets are organized like this:
      * [0] The complete mask
      * [1] The line number
      * [2] The original snippet
      * [3] The replacement snippet
      */
 
     if (!$found) {
       return array();
     }
 
     $messages = [];
     foreach($snippets as $snippet) {
       $messages[] = id(new ArcanistLintMessage())
         ->setPath($path)
         ->setLine($snippet[1])
         ->setChar(1)
         ->setGranularity(ArcanistLinter::GRANULARITY_FILE)
         ->setCode('PYFMT')
         ->setSeverity(ArcanistLintSeverity::SEVERITY_AUTOFIX)
         ->setName('Old string format notation')
         ->setDescription("'$path' uses old style string formatting.")
         ->setOriginalText(rtrim($snippet[2]))
         ->setReplacementText($snippet[3]);
     }
     
     return $messages;
   }
 }
\ No newline at end of file