diff --git a/prj.conf b/prj.conf
index ab337ce..08c00a7 100644
--- a/prj.conf
+++ b/prj.conf
@@ -18,6 +18,7 @@ CONFIG_STREAM_FLASH=y
 CONFIG_BT=y
 CONFIG_BT_PERIPHERAL=y
 CONFIG_BT_SMP=y
+CONFIG_BT_PERIPHERAL_PREF_TIMEOUT=400
 CONFIG_BT_DEVICE_NAME="new_kbd"
 CONFIG_BT_DEVICE_APPEARANCE=961
 CONFIG_BT_MAX_CONN=1