diff --git a/llarp/iwp/message_buffer.cpp b/llarp/iwp/message_buffer.cpp
index 4e339664e..b24731bf5 100644
--- a/llarp/iwp/message_buffer.cpp
+++ b/llarp/iwp/message_buffer.cpp
@@ -165,7 +165,7 @@ namespace llarp
     bool
     InboundMessage::ShouldSendACKS(llarp_time_t now) const
     {
-      return now > m_LastACKSent + (Session::DeliveryTimeout / 4);
+      return now > m_LastACKSent + (Session::DeliveryTimeout / 2);
     }
 
     bool