diff --git a/src/applications/diffusion/controller/DiffusionBrowseFileController.php b/src/applications/diffusion/controller/DiffusionBrowseFileController.php
index b01b3d02a8..274f268fbe 100644
--- a/src/applications/diffusion/controller/DiffusionBrowseFileController.php
+++ b/src/applications/diffusion/controller/DiffusionBrowseFileController.php
@@ -137,8 +137,13 @@ final class DiffusionBrowseFileController extends DiffusionController {
 
     $lint_request = clone $drequest;
     $lint_request->setCommit($branch->getLintCommit());
-    $lint_history = DiffusionHistoryQuery::newFromDiffusionRequest(
-      $lint_request)->setLimit(1)->loadHistory();
+    try {
+      $lint_history = DiffusionHistoryQuery::newFromDiffusionRequest(
+        $lint_request)->setLimit(1)->loadHistory();
+    } catch (Exception $ex) {
+      // This can happen if lintCommit is invalid.
+      $lint_history = null;
+    }
 
     $this->lintCommit = '';
     if (!$file_history || !$lint_history ||