diff --git a/launcher/updater/prismupdater/PrismUpdater.cpp b/launcher/updater/prismupdater/PrismUpdater.cpp
index b335a19f9..76ba483f0 100644
--- a/launcher/updater/prismupdater/PrismUpdater.cpp
+++ b/launcher/updater/prismupdater/PrismUpdater.cpp
@@ -787,7 +787,7 @@ QList<GitHubReleaseAsset> PrismUpdaterApp::validReleaseArtifacts(const GitHubRel
     if (BuildConfig.BUILD_ARTIFACT.isEmpty())
         qWarning() << "Build platform is not set!";
     for (auto asset : release.assets) {
-        if (asset.name.endsWith("zsync")) {
+        if (asset.name.endsWith(".zsync")) {
             qDebug() << "Rejecting zsync file" << asset.name;
             continue;
         }