diff --git a/.travis.yml b/.travis.yml
index be1e184..e8ab2db 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,5 +4,5 @@ services:
     - docker
 
 script:
-    - docker build --rm --buildarg "USERID=`id -u`" -tag webfuse .
+    - docker build --rm --build-arg "USERID=`id -u`" --tag webfuse .
  
\ No newline at end of file
diff --git a/README.md b/README.md
index cb3be0c..bb3e543 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ Example of webfuse.
 
 ## Build
 
-    docker build --rm --buildarg "USERID=`id -u`" -tag webfuse .
+    docker build --rm --build-arg "USERID=`id -u`" --tag webfuse .
 
 # Run