diff --git a/src/applications/diffusion/query/rawdiff/DiffusionGitRawDiffQuery.php b/src/applications/diffusion/query/rawdiff/DiffusionGitRawDiffQuery.php
--- a/src/applications/diffusion/query/rawdiff/DiffusionGitRawDiffQuery.php
+++ b/src/applications/diffusion/query/rawdiff/DiffusionGitRawDiffQuery.php
@@ -35,7 +35,7 @@
     }
 
     $path = $drequest->getPath();
-    if (!strlen($path)) {
+    if (!phutil_nonempty_string($path)) {
       $path = '.';
     }