diff --git a/atom/browser/api/atom_api_session.cc b/atom/browser/api/atom_api_session.cc
index 58de02f2ff63..bf950c4bb20a 100644
--- a/atom/browser/api/atom_api_session.cc
+++ b/atom/browser/api/atom_api_session.cc
@@ -416,7 +416,9 @@ void Session::SetDownloadPath(const base::FilePath& path) {
 void Session::EnableNetworkEmulation(const mate::Dictionary& options) {
   std::unique_ptr<brightray::DevToolsNetworkConditions> conditions;
   bool offline = false;
-  double latency, download_throughput, upload_throughput;
+  double latency = 0.0;
+  double download_throughput = 0.0;
+  double upload_throughput = 0.0;
   if (options.Get("offline", &offline) && offline) {
     conditions.reset(new brightray::DevToolsNetworkConditions(offline));
   } else {