diff --git a/samples/net/sockets/echo/overlay-tcp2.conf b/samples/net/sockets/echo/overlay-tcp2.conf
index 6a4881d9368..444883675e0 100644
--- a/samples/net/sockets/echo/overlay-tcp2.conf
+++ b/samples/net/sockets/echo/overlay-tcp2.conf
@@ -3,6 +3,7 @@
 CONFIG_NET_TCP=y
 CONFIG_NET_TCP2=y
 
+CONFIG_MAIN_STACK_SIZE=2048
 CONFIG_NET_TX_STACK_SIZE=8192
 CONFIG_NET_RX_STACK_SIZE=8192