diff --git a/proj/unixsim/Makefile b/proj/unixsim/Makefile
index 6305ba1e..31529e7b 100644
--- a/proj/unixsim/Makefile
+++ b/proj/unixsim/Makefile
@@ -44,8 +44,8 @@ CFLAGS:=$(CFLAGS) \
 # COREFILES, CORE4FILES: The minimum set of files needed for lwIP.
 COREFILES=$(LWIPDIR)/core/mem.c $(LWIPDIR)/core/memp.c $(LWIPDIR)/core/netif.c \
 	$(LWIPDIR)/core/pbuf.c $(LWIPDIR)/core/stats.c $(LWIPDIR)/core/sys.c \
-        $(LWIPDIR)/core/tcp.c $(LWIPDIR)/core/tcp_input.c \
-        $(LWIPDIR)/core/tcp_output.c $(LWIPDIR)/core/udp.c 
+        $(LWIPDIR)/core/tcp.c $(LWIPDIR)/core/tcp_in.c \
+        $(LWIPDIR)/core/tcp_out.c $(LWIPDIR)/core/udp.c 
 CORE4FILES=$(LWIPDIR)/core/ipv4/icmp.c $(LWIPDIR)/core/ipv4/ip.c \
 	$(LWIPDIR)/core/inet.c $(LWIPDIR)/core/ipv4/ip_addr.c
 
@@ -78,7 +78,7 @@ APPOBJS=$(notdir $(APPFILES:.c=.o))
 %.o:
 	$(CC) $(CFLAGS) -c $(<:.o=.c)
 
-all ipv4 compile: simhost simnode simrouter
+all ipv4 compile: simhost 
 .PHONY: all
 
 clean: