diff --git a/doc/F-Stack_Build_Guide.md b/doc/F-Stack_Build_Guide.md
index 8ca628c63..655ab82c4 100644
--- a/doc/F-Stack_Build_Guide.md
+++ b/doc/F-Stack_Build_Guide.md
@@ -58,15 +58,6 @@ $ cd ../examples
 $ make
 ```
 
-## Compile tools in Ubuntu
-
-- remove '\\' in statement printf at f-stack/tools/netstat/Makefile line 70, now it should be:
-
-```
--   printf("\#define\tN%s\t%s\n", toupper($$2), i++);
-+   printf("#define\tN%s\t%s\n", toupper($$2), i++);
-```
-
 ## Compile dpdk in virtual machine
 
 - f-stack/dpdk/kernel/linux/igb_uio/igb_uio.c line 274:
diff --git a/tools/netstat/Makefile b/tools/netstat/Makefile
index 9bcb93dce..3ebbd61f0 100644
--- a/tools/netstat/Makefile
+++ b/tools/netstat/Makefile
@@ -49,6 +49,8 @@ endif
 
 include ${TOPDIR}/tools/prog.mk
 
+UNAME := $(shell uname)
+
 nl_symbols.c: nlist_symbols
 	awk '\
 	    BEGIN { \
@@ -60,6 +62,7 @@ nl_symbols.c: nlist_symbols
 	    END { print "\t{ .n_name = NULL },\n};" } \
 	    ' < $^ > $@
 
+ifeq ($(UNAME), Linux)
 nl_defs.h: nlist_symbols
 	awk '\
 	    BEGIN { \
@@ -67,6 +70,16 @@ nl_defs.h: nlist_symbols
 		print "extern struct nlist nl[];"; \
 		i = 0; \
 	    } \
-	    !/^\#/ { printf("\#define\tN%s\t%s\n", toupper($$2), i++); }' \
+            !/^\#/ { printf("#define\tN%s\t%s\n", toupper($$2), i++); }' \
             < $^ > $@
-
+else
+nl_defs.h: nlist_symbols
+	awk '\
+	    BEGIN { \
+		print "#include <nlist.h>"; \
+		print "extern struct nlist nl[];"; \
+		i = 0; \
+	    } \
+            !/^\#/ { printf("\#define\tN%s\t%s\n", toupper($$2), i++); }' \
+            < $^ > $@
+endif