diff --git a/.travis.yml b/.travis.yml
index fc162f25..ddca74b3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,7 +18,7 @@ before_install:
   - |
     # non llvm builds
     if [[ "$OPENDHT_TEST_JOB" != *"opendht.llvm"* ]]; then
-      docker pull aberaud/opendht-deps;
+      docker pull aberaud/opendht-deps-bionic;
     fi
 
   - |
diff --git a/src/dht_proxy_server.cpp b/src/dht_proxy_server.cpp
index a200f712..d1f801ca 100644
--- a/src/dht_proxy_server.cpp
+++ b/src/dht_proxy_server.cpp
@@ -350,11 +350,13 @@ DhtProxyServer::saveState(Os& stream) {
         pk.pack("puts");
         pk.pack(puts_);
     }
+#ifdef OPENDHT_PUSH_NOTIFICATIONS
     {
         std::lock_guard<std::mutex> lock(lockListener_);
         pk.pack("pushListeners");
         pk.pack(pushListeners_);
     }
+#endif
 }
 
 template <typename Is>