diff --git a/src/lint/linter/ArcanistXHPASTLinter.php b/src/lint/linter/ArcanistXHPASTLinter.php
index 535278d1..f9f19201 100644
--- a/src/lint/linter/ArcanistXHPASTLinter.php
+++ b/src/lint/linter/ArcanistXHPASTLinter.php
@@ -3176,7 +3176,7 @@ final class ArcanistXHPASTLinter extends ArcanistBaseXHPASTLinter {
       $argv = array($format->evalStatic()) + array_fill(0, $argc, null);
 
       try {
-        xsprintf(array($this, 'xsprintfCallback'), null, $argv);
+        xsprintf(null, null, $argv);
       } catch (BadFunctionCallException $ex) {
         $this->raiseLintAtNode(
           $call,
@@ -3188,13 +3188,6 @@ final class ArcanistXHPASTLinter extends ArcanistBaseXHPASTLinter {
     }
   }
 
-  /**
-   * A stub function to be used as an @{function:xsprintf} callback.
-   *
-   * @return void
-   */
-  public function xsprintfCallback() {}
-
   public function getSuperGlobalNames() {
     return array(
       '$GLOBALS',