diff --git a/configs/c5471evm/defconfig b/configs/c5471evm/defconfig
index d262c7cb6dc..0ca8e9b516d 100644
--- a/configs/c5471evm/defconfig
+++ b/configs/c5471evm/defconfig
@@ -279,6 +279,7 @@ CONFIG_NET_SOCKOPTS=y
 CONFIG_NET_BUFSIZE=420
 CONFIG_NET_TCP=n
 CONFIG_NET_TCP_CONNS=40
+CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_UDP=n
 CONFIG_NET_UDP_CHECKSUMS=y
diff --git a/configs/c5471evm/netconfig b/configs/c5471evm/netconfig
index 4d7a065000f..2a8f9701077 100644
--- a/configs/c5471evm/netconfig
+++ b/configs/c5471evm/netconfig
@@ -279,6 +279,7 @@ CONFIG_NET_SOCKOPTS=y
 CONFIG_NET_BUFSIZE=420
 CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
+CONFIG_NET_NTCP_READAHEAD_BUFFERS=32
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_UDP=n
 CONFIG_NET_UDP_CHECKSUMS=y