diff --git a/lint/linter/ClangFormatLinter.php b/lint/linter/ClangFormatLinter.php
index 73685e0b2..a60679082 100644
--- a/lint/linter/ClangFormatLinter.php
+++ b/lint/linter/ClangFormatLinter.php
@@ -1,79 +1,81 @@
 <?php
 
 /**
  * Uses the clang format to format C/C++/Obj-C code
  */
 final class ClangFormatLinter extends ArcanistExternalLinter {
 
   public function getInfoName() {
     return 'clang-format';
   }
 
   public function getInfoURI() {
     return '';
   }
 
   public function getInfoDescription() {
     return pht('Use clang-format for processing specified files.');
   }
 
   public function getLinterName() {
     return 'clang-format';
   }
 
   public function getLinterConfigurationName() {
     return 'clang-format';
   }
 
   public function getLinterConfigurationOptions() {
     $options = array(
     );
 
     return $options + parent::getLinterConfigurationOptions();
   }
 
   public function getDefaultBinary() {
     return 'clang-format';
   }
 
   public function getInstallInstructions() {
     return pht('Make sure clang-format is in directory specified by $PATH');
   }
 
   public function shouldExpectCommandErrors() {
     return false;
   }
 
   protected function getMandatoryFlags() {
     return array(
     );
   }
 
   protected function parseLinterOutput($path, $err, $stdout, $stderr) {
     $ok = ($err == 0);
 
     if (!$ok) {
       return false;
     }
 
+    $root = $this->getProjectRoot();
+    $path = Filesystem::resolvePath($path, $root);
     $orig = file_get_contents($path);
     if ($orig == $stdout) {
       return array();
     }
 
     $message = id(new ArcanistLintMessage())
       ->setPath($path)
       ->setLine(1)
       ->setChar(1)
       ->setGranularity(ArcanistLinter::GRANULARITY_FILE)
       ->setCode('CFMT')
       ->setSeverity(ArcanistLintSeverity::SEVERITY_AUTOFIX)
       ->setName('Code style violation')
       ->setDescription("'$path' has code style errors.")
       ->setOriginalText($orig)
       ->setReplacementText($stdout);
     return array($message);
   }
 }
 
 ?>