diff --git a/Propellor/Property/SiteSpecific/GitAnnexBuilder.hs b/Propellor/Property/SiteSpecific/GitAnnexBuilder.hs
index 8ca6593..bdc7b4b 100644
--- a/Propellor/Property/SiteSpecific/GitAnnexBuilder.hs
+++ b/Propellor/Property/SiteSpecific/GitAnnexBuilder.hs
@@ -23,7 +23,7 @@ builder arch crontimes = combineProperties "gitannexbuilder"
 	, serviceRunning "cron" `requires` Apt.installed ["cron"]
 	, User.accountFor builduser
 	, check (lacksdir builddir) $ userScriptProperty builduser
-		[ "git clone https://github.com/joeyh/gitbuilder/"
+		[ "git clone https://github.com/joeyh/gitbuilder.git"
 		, "cd gitbuilder"
 		, "git checkout " ++ map toLower (show arch)
 		, "git clone https://git-annex.branchable.com/ build"