diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index 4507ce60de3..0fd5bfea902 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -98,7 +98,7 @@ ifeq ($(CONFIG_ARCH_ROMGETC),y)
 CSRCS += up_romgetc.c
 endif
 
-ifeq ($(CONFIG_NET),y)
+ifeq ($(CONFIG_NET_ETHERNET),y)
 CSRCS += up_netdriver.c
 HOSTCFLAGS += -DNETDEV_BUFSIZE=$(CONFIG_NET_ETH_MTU)
 ifneq ($(HOSTOS),Cygwin)