diff --git a/resources/sql/patches/006.repository.sql b/resources/sql/patches/006.repository.sql
index 29ce4aa76e..4f1e83f948 100644
--- a/resources/sql/patches/006.repository.sql
+++ b/resources/sql/patches/006.repository.sql
@@ -52,3 +52,5 @@ alter table phabricator_repository.repository_commit add unique key
 alter table phabricator_repository.repository_commit add key
   (repositoryID, epoch);
 
+alter table phabricator_repository.repository_filesystem
+  add key (repositoryID, pathID, svnCommit);
\ No newline at end of file
diff --git a/src/applications/diffusion/query/browse/svn/DiffusionSvnBrowseQuery.php b/src/applications/diffusion/query/browse/svn/DiffusionSvnBrowseQuery.php
index 59ed975b26..7710362646 100644
--- a/src/applications/diffusion/query/browse/svn/DiffusionSvnBrowseQuery.php
+++ b/src/applications/diffusion/query/browse/svn/DiffusionSvnBrowseQuery.php
@@ -59,7 +59,7 @@ final class DiffusionSvnBrowseQuery extends DiffusionBrowseQuery {
       $slice_clause);
 
     if (!$index) {
-      if ($this->path == '/') {
+      if ($path == '/') {
         $this->reason = self::REASON_IS_EMPTY;
       } else {
         $reasons = queryfx_all(
diff --git a/src/applications/diffusion/query/filecontent/svn/DiffusionSvnFileContentQuery.php b/src/applications/diffusion/query/filecontent/svn/DiffusionSvnFileContentQuery.php
index 6105b1498e..dc3deece81 100644
--- a/src/applications/diffusion/query/filecontent/svn/DiffusionSvnFileContentQuery.php
+++ b/src/applications/diffusion/query/filecontent/svn/DiffusionSvnFileContentQuery.php
@@ -27,11 +27,27 @@ final class DiffusionSvnFileContentQuery extends DiffusionFileContentQuery {
 
     $remote_uri = $repository->getDetail('remote-uri');
 
-    list($corpus) = execx(
-      'svn --non-interactive cat %s%s@%s',
-      $remote_uri,
-      $path,
-      $commit);
+    try {
+      list($corpus) = execx(
+        'svn --non-interactive cat %s%s@%s',
+        $remote_uri,
+        $path,
+        $commit);
+    } catch (CommandException $ex) {
+      $stderr = $ex->getStdErr();
+      if (preg_match('/path not found$/', trim($stderr))) {
+        // TODO: Improve user experience for this. One way to end up here
+        // is to have the parser behind and look at a file which was recently
+        // nuked; Diffusion will think it still exists and try to grab content
+        // at HEAD.
+        throw new Exception(
+          "Failed to retrieve file content from Subversion. The file may ".
+          "have been recently deleted, or the Diffusion cache may be out of ".
+          "date.");
+      } else {
+        throw $ex;
+      }
+    }
 
     $file_content = new DiffusionFileContent();
     $file_content->setCorpus($corpus);