diff --git a/wsd/DocumentBroker.cpp b/wsd/DocumentBroker.cpp
index b122064f43eb..85e58a6fd79c 100644
--- a/wsd/DocumentBroker.cpp
+++ b/wsd/DocumentBroker.cpp
@@ -888,21 +888,6 @@ void DocumentBroker::stop(const std::string& reason)
     _poll->wakeup();
 }
 
-bool DocumentBroker::downloadAdvance(const std::string& jailId, const Poco::URI& uriPublic,
-                                     std::unique_ptr<WopiStorage::WOPIFileInfo> wopiFileInfo)
-{
-    ASSERT_CORRECT_THREAD();
-
-    LOG_INF("Loading [" << _docKey << "] ahead-of-time in jail [" << jailId << ']');
-
-    assert(!_docState.isMarkedToDestroy() && "MarkedToDestroy while downloading ahead-of-time");
-
-    assert(_storage == nullptr &&
-           "Unexpected to find storage created while downloading ahead-of-time");
-
-    return download(/*session=*/nullptr, jailId, uriPublic, std::move(wopiFileInfo));
-}
-
 bool DocumentBroker::download(
     const std::shared_ptr<ClientSession>& session, const std::string& jailId,
     const Poco::URI& uriPublic,
diff --git a/wsd/DocumentBroker.hpp b/wsd/DocumentBroker.hpp
index 8e41417c1b04..a0e20dd6bbc9 100644
--- a/wsd/DocumentBroker.hpp
+++ b/wsd/DocumentBroker.hpp
@@ -547,10 +547,6 @@ class DocumentBroker : public std::enable_shared_from_this<DocumentBroker>
 
     void refreshLock();
 
-    /// Downloads the document ahead-of-time.
-    bool downloadAdvance(const std::string& jailId, const Poco::URI& uriPublic,
-                         std::unique_ptr<WopiStorage::WOPIFileInfo> wopiFileInfo);
-
     /// Loads a document from the public URI into the jail.
     bool download(const std::shared_ptr<ClientSession>& session, const std::string& jailId,
                   const Poco::URI& uriPublic,