diff --git a/src/shrpx.cc b/src/shrpx.cc
index bf43f809..5c1defd3 100644
--- a/src/shrpx.cc
+++ b/src/shrpx.cc
@@ -670,7 +670,7 @@ void fill_default_config() {
   mod_config()->stream_write_timeout = 0.;
 
   // Timeout for pooled (idle) connections
-  mod_config()->downstream_idle_read_timeout = 600.;
+  mod_config()->downstream_idle_read_timeout = 2.;
 
   // window bits for HTTP/2 and SPDY upstream/downstream connection
   // per stream. 2**16-1 = 64KiB-1, which is HTTP/2 default. Please