diff --git a/after/ftplugin/asciidoc.vim b/after/ftplugin/asciidoc.vim
index 9658410..8e2062b 100644
--- a/after/ftplugin/asciidoc.vim
+++ b/after/ftplugin/asciidoc.vim
@@ -1,2 +1,2 @@
-set textwidth=76
-set formatoptions+=n
+setlocal textwidth=76
+setlocal formatoptions+=n
diff --git a/after/ftplugin/json.vim b/after/ftplugin/json.vim
index 038175a..4cf644a 100644
--- a/after/ftplugin/json.vim
+++ b/after/ftplugin/json.vim
@@ -1 +1 @@
-set conceallevel=2
+setlocal conceallevel=2
diff --git a/after/ftplugin/python.vim b/after/ftplugin/python.vim
index f5a186c..3752f50 100644
--- a/after/ftplugin/python.vim
+++ b/after/ftplugin/python.vim
@@ -1,8 +1,8 @@
 " Set up tabs
-set expandtab
-set tabstop=8
-set shiftwidth=4
-set softtabstop=4
+setlocal expandtab
+setlocal tabstop=8
+setlocal shiftwidth=4
+setlocal softtabstop=4
 
 " Set up text width
 setlocal textwidth=0