diff --git a/src/error/PhutilErrorHandler.php b/src/error/PhutilErrorHandler.php
--- a/src/error/PhutilErrorHandler.php
+++ b/src/error/PhutilErrorHandler.php
@@ -300,7 +300,7 @@
   /**
    * Output a stacktrace to the PHP error log.
    *
-   * @param trace $trace A stacktrace, e.g. from debug_backtrace();
+   * @param array $trace A stacktrace, e.g. from debug_backtrace();
    * @return void
    * @task internal
    */
@@ -315,7 +315,7 @@
   /**
    * Format a stacktrace for output.
    *
-   * @param trace $trace A stacktrace, e.g. from debug_backtrace();
+   * @param array $trace A stacktrace, e.g. from debug_backtrace();
    * @return string Human-readable trace.
    * @task internal
    */
diff --git a/src/repository/api/ArcanistGitAPI.php b/src/repository/api/ArcanistGitAPI.php
--- a/src/repository/api/ArcanistGitAPI.php
+++ b/src/repository/api/ArcanistGitAPI.php
@@ -404,7 +404,7 @@
 
   /**
    * Translates a symbolic commit (like "HEAD^") to a commit identifier.
-   * @param string_symbol $symbolic_commit commit.
+   * @param string $symbolic_commit commit.
    * @return string the commit SHA.
    */
   private function resolveCommit($symbolic_commit) {
diff --git a/src/repository/api/ArcanistMercurialAPI.php b/src/repository/api/ArcanistMercurialAPI.php
--- a/src/repository/api/ArcanistMercurialAPI.php
+++ b/src/repository/api/ArcanistMercurialAPI.php
@@ -734,7 +734,7 @@
    *
    * @param array $child_nodes The list of child changesets off the original
    *   commit.
-   * @param file  $tmp_file The file containing the new commit message.
+   * @param wild  $tmp_file The file containing the new commit message.
    */
   private function amendNonHeadCommit($child_nodes, $tmp_file) {
     list($current) = $this->execxLocal(
diff --git a/src/upload/ArcanistFileDataRef.php b/src/upload/ArcanistFileDataRef.php
--- a/src/upload/ArcanistFileDataRef.php
+++ b/src/upload/ArcanistFileDataRef.php
@@ -65,7 +65,7 @@
    * data, or by calling @{method:setPath} and providing a path to a file on
    * disk.
    *
-   * @param bytes $data Blob of file data.
+   * @param wild $data Blob of file data.
    * @task config
    */
   public function setData($data) {
diff --git a/src/utils/utils.php b/src/utils/utils.php
--- a/src/utils/utils.php
+++ b/src/utils/utils.php
@@ -1692,7 +1692,7 @@
 /**
  * Build a query string from a list of parameter pairs.
  *
- * @param list<pair<string, string>> $pairs List of pairs.
+ * @param list<array<string, string>> $pairs List of pairs.
  * @return string HTTP query string.
  */
 function phutil_build_http_querystring_from_pairs(array $pairs) {
diff --git a/src/workflow/ArcanistWorkflow.php b/src/workflow/ArcanistWorkflow.php
--- a/src/workflow/ArcanistWorkflow.php
+++ b/src/workflow/ArcanistWorkflow.php
@@ -1633,7 +1633,7 @@
    *
    * @param   list          $paths List of explicitly provided paths.
    * @param   string|null   $rev Revision name, if provided.
-   * @param   mask          $omit_mask (optional) Mask of ArcanistRepositoryAPI
+   * @param   int           $omit_mask (optional) Mask of ArcanistRepositoryAPI
    *                        flags to exclude.
    *                        Defaults to ArcanistRepositoryAPI::FLAG_UNTRACKED.
    * @return  list          List of paths the workflow should act on.