diff --git a/weave b/weave
index 29f080e0..01e1dbb7 100755
--- a/weave
+++ b/weave
@@ -1154,6 +1154,7 @@ proxy_args() {
 
 proxy_addrs() {
     if addr="$(call_weave GET /proxyaddrs)" ; then
+      [ -n "$addr" ] || return 1
       echo "$addr" | sed "s/0.0.0.0/$PROXY_HOST/g" | tr '\n' ' '
     else
       return 1