diff --git a/src/infrastructure/markup/interpreter/PhabricatorRemarkupFigletBlockInterpreter.php b/src/infrastructure/markup/interpreter/PhabricatorRemarkupFigletBlockInterpreter.php
index 517efe9d0f..2314b998f3 100644
--- a/src/infrastructure/markup/interpreter/PhabricatorRemarkupFigletBlockInterpreter.php
+++ b/src/infrastructure/markup/interpreter/PhabricatorRemarkupFigletBlockInterpreter.php
@@ -1,43 +1,45 @@
 <?php
 
 final class PhabricatorRemarkupFigletBlockInterpreter
   extends PhutilRemarkupBlockInterpreter {
 
   public function getInterpreterName() {
     return 'figlet';
   }
 
   public function markupContent($content, array $argv) {
     if (!Filesystem::binaryExists('figlet')) {
       return $this->markupError(
         pht('Unable to locate the `figlet` binary. Install figlet.'));
     }
 
     $font = idx($argv, 'font', 'standard');
     $safe_font = preg_replace('/[^0-9a-zA-Z-_.]/', '', $font);
     $future = id(new ExecFuture('figlet -f %s', $safe_font))
       ->setTimeout(15)
       ->write(trim($content, "\n"));
 
     list($err, $stdout, $stderr) = $future->resolve();
 
     if ($err) {
       return $this->markupError(
         pht(
-          'Execution of `figlet` failed:', $stderr));
+          'Execution of `%s` failed: %s',
+          'figlet',
+          $stderr));
     }
 
 
     if ($this->getEngine()->isTextMode()) {
       return $stdout;
     }
 
     return phutil_tag(
       'div',
       array(
         'class' => 'PhabricatorMonospaced remarkup-figlet',
       ),
       $stdout);
   }
 
 }