diff --git a/apt/bootstrap-cosmos.sh b/apt/bootstrap-cosmos.sh
index 1e7b941..6b4454a 100755
--- a/apt/bootstrap-cosmos.sh
+++ b/apt/bootstrap-cosmos.sh
@@ -32,7 +32,7 @@ fi
 hostname $cmd_hostname
 
 perl -pi -e "s,#COSMOS_REPO_MODELS=.*,COSMOS_REPO_MODELS=\"\\\$COSMOS_REPO/global/:\\\$COSMOS_REPO/$cmd_hostname/\"," /etc/cosmos/cosmos.conf
-perl -pi -e 's,#COSMOS_UPDATE_VERIFY_GIT_TAG_PATTERN=.*,COSMOS_UPDATE_VERIFY_GIT_TAG_PATTERN="${cmd_tags}*",' /etc/cosmos/cosmos.conf
+perl -pi -e "s,#COSMOS_UPDATE_VERIFY_GIT_TAG_PATTERN=.*,COSMOS_UPDATE_VERIFY_GIT_TAG_PATTERN=\"${cmd_tags}*\"," /etc/cosmos/cosmos.conf
 
 env COSMOS_BASE=/var/cache/cosmos COSMOS_KEYS=/var/cache/cosmos/repo/global/overlay/etc/cosmos/keys /var/cache/cosmos/repo/global/post-tasks.d/015cosmos-trust