diff --git a/zshenv b/zshenv
index db5dcb2..2cfbb27 100644
--- a/zshenv
+++ b/zshenv
@@ -37,6 +37,10 @@ typeset -U PATH;      export PATH
 typeset -U MANPATH;   export MANPATH
 typeset -U INFOPATH;  export INFOPATH
 
+# Set default editor.
+which vim &> /dev/null && \
+  export EDITOR=`which vim`
+
 # Use ~/.local for pip installs on macOS
 [ "`uname`" = "Darwin" ] && export PYTHONUSERBASE=$HOME/.local