diff --git a/README.md b/README.md
index 9afdefc..d4db819 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@
 ## Generate
 
     # in order to add git commit on blog pages
-    EXPORT GIT_COMMIT_SHA=`git rev-parse --verify HEAD`
-    EXPORT GIT_COMMIT_SHA_SHORT=`git rev-parse --short HEAD`
+    export GIT_COMMIT_SHA=`git rev-parse --verify HEAD`
+    export GIT_COMMIT_SHA_SHORT=`git rev-parse --short HEAD`
     # gen blog inside ./static folder
     hugo