diff --git a/indra/viewer_components/updater/tests/llupdaterservice_test.cpp b/indra/viewer_components/updater/tests/llupdaterservice_test.cpp
index 25fd1b034d2c8090cc183317f747c5b6a066f8dd..390879352c2d7acf7a49bace9bf4c214b880c4be 100644
--- a/indra/viewer_components/updater/tests/llupdaterservice_test.cpp
+++ b/indra/viewer_components/updater/tests/llupdaterservice_test.cpp
@@ -100,6 +100,7 @@ std::string LLUpdateDownloader::downloadMarkerPath(void)
 }
 
 void LLUpdateDownloader::resume(void) {}
+void LLUpdateDownloader::cancel(void) {}
 
 int ll_install_update(std::string const &, std::string const &, LLInstallScriptMode)
 {