diff --git a/src/applications/search/compiler/PhutilSearchQueryCompiler.php b/src/applications/search/compiler/PhutilSearchQueryCompiler.php
--- a/src/applications/search/compiler/PhutilSearchQueryCompiler.php
+++ b/src/applications/search/compiler/PhutilSearchQueryCompiler.php
@@ -147,6 +147,11 @@
           new PhutilNumber($query_bytes),
           new PhutilNumber($maximum_bytes)));
     }
+    // Remove duplicate tokens but keep quoted tokens intact
+    $query = preg_split('/("[^"]*")|\h+/', $query, -1,
+      PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
+    $query = array_unique($query);
+    $query = implode(' ', $query);
 
     $query = phutil_utf8v($query);
     $length = count($query);