diff --git a/packaging/linux/buildpackage.sh b/packaging/linux/buildpackage.sh
index 89c10e0240..d52667d4f6 100755
--- a/packaging/linux/buildpackage.sh
+++ b/packaging/linux/buildpackage.sh
@@ -112,7 +112,7 @@ build_appimage() {
 
 	# Embed update metadata if (and only if) compiled on GitHub Actions
 	if [ -n "${GITHUB_REPOSITORY}" ]; then
-		ARCH=x86_64 ./appimagetool-x86_64.AppImage --no-appstream -u "zsync|https://master.openra.net/appimagecheck?mod=${MOD_ID}&channel=${UPDATE_CHANNEL}&format=.zsync" "${APPDIR}" "${OUTPUTDIR}/${APPIMAGE}"
+		ARCH=x86_64 ./appimagetool-x86_64.AppImage --no-appstream -u "zsync|https://master.openra.net/appimagecheck.zsync?mod=${MOD_ID}&channel=${UPDATE_CHANNEL}" "${APPDIR}" "${OUTPUTDIR}/${APPIMAGE}"
 		zsyncmake -u "https://github.com/${GITHUB_REPOSITORY}/releases/download/${TAG}/${APPIMAGE}" -o "${OUTPUTDIR}/${APPIMAGE}.zsync" "${OUTPUTDIR}/${APPIMAGE}"
 	else
 		ARCH=x86_64 ./appimagetool-x86_64.AppImage --no-appstream "${APPDIR}" "${OUTPUTDIR}/${APPIMAGE}"