diff --git a/README.md b/README.md
index 1411387b..68c4d952 100644
--- a/README.md
+++ b/README.md
@@ -63,10 +63,10 @@ Currently, besides authorized DNS server of DNSPod, there are various products i
     #sudo apt-get install gawk  # or execute `sudo update-alternatives --config awk` to choose gawk.
 
     # Compile F-Stack
-    cd ../../lib/
-    make
     export FF_PATH=/data/f-stack
     export FF_DPDK=/data/f-stack/dpdk/x86_64-native-linuxapp-gcc
+    cd ../../lib/
+    make
 
 #### Nginx
 
diff --git a/doc/F-Stack_Quick_Start_Guide.md b/doc/F-Stack_Quick_Start_Guide.md
index aa248b56..914b7377 100644
--- a/doc/F-Stack_Quick_Start_Guide.md
+++ b/doc/F-Stack_Quick_Start_Guide.md
@@ -46,17 +46,17 @@ The mount point can be made permanent across reboots, by adding the following li
     modprobe uio
     insmod /data/f-stack/dpdk/x86_64-native-linuxapp-gcc/build/kmod/igb_uio.ko
     insmod /data/f-stack/dpdk/x86_64-native-linuxapp-gcc/build/kmod/rte_kni.ko
-	python dpdk-devbind.py --status
+    python dpdk-devbind.py --status
     ifconfig eth0 down
-	python dpdk-devbind.py --bind=igb_uio eth0 # assuming that use 10GE NIC and eth0
+    python dpdk-devbind.py --bind=igb_uio eth0 # assuming that use 10GE NIC and eth0
 
 ## Compile  lib
 
-	cd ../../
+    export FF_PATH=/data/f-stack
+    export FF_DPDK=/data/f-stack/dpdk/x86_64-native-linuxapp-gcc
+    cd ../../
     cd lib
-	make
-	export FF_PATH=/data/f-stack
-	export FF_DPDK=/data/f-stack/dpdk/x86_64-native-linuxapp-gcc
+    make
 
 ### Compile Nginx