diff --git a/ports/zephyr/prj_qemu_x86.conf b/ports/zephyr/prj_qemu_x86.conf
index 9bc81259a2..1ade981e21 100644
--- a/ports/zephyr/prj_qemu_x86.conf
+++ b/ports/zephyr/prj_qemu_x86.conf
@@ -5,6 +5,3 @@ CONFIG_CONSOLE_PULL=n
 # Networking drivers
 # SLIP driver for QEMU
 CONFIG_NET_SLIP_TAP=y
-
-# Default RAM easily overflows with uPy and networking
-CONFIG_RAM_SIZE=320