diff --git a/README.md b/README.md
index b5ef517..0fc4695 100644
--- a/README.md
+++ b/README.md
@@ -58,8 +58,7 @@ Add the following to your `~/.tmux.conf` file:
 ``` tmux
 # Smart pane switching with awareness of Vim splits.
 # See: https://github.com/christoomey/vim-tmux-navigator
-is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
-    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
+is_vim="ps -a |grep -qE '.*''#{s|/dev/||:pane_tty}'' .*+(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
 bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h'  'select-pane -L'
 bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j'  'select-pane -D'
 bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k'  'select-pane -U'
@@ -219,15 +218,8 @@ altered to avoid conflicting with the mappings from the plugin.
 
 Another option is that the pattern matching included in the `.tmux.conf` is
 not recognizing that Vim is active. To check that tmux is properly recognizing
-Vim, use the provided Vim command `:TmuxNavigatorProcessList`. The output of
-that command should be a list like:
-
-```
-Ss   -zsh
-S+   vim
-S+   tmux
-```
-
+Vim is running in a tmux pane, use the provided Vim command `:TmuxNavigatorProcessList`. The output of
+that command should look like the output from `ps -a|grep vim`.
 If you encounter a different output please [open an issue][] with as much info
 about your OS, Vim version, and tmux version as possible.
 
diff --git a/plugin/tmux_navigator.vim b/plugin/tmux_navigator.vim
index 21595bb..0859eb3 100644
--- a/plugin/tmux_navigator.vim
+++ b/plugin/tmux_navigator.vim
@@ -65,7 +65,7 @@ function! s:TmuxCommand(args)
 endfunction
 
 function! s:TmuxNavigatorProcessList()
-  echo s:TmuxCommand("run-shell 'ps -o state= -o comm= -t ''''#{pane_tty}'''''")
+  echo s:TmuxCommand("run-shell 'ps -a|grep -E \"''''#{s|/dev/||:pane_tty}'''' .*+(\\S+\\/)?g?(view|n?vim?x?)(diff)?$\"'")
 endfunction
 command! TmuxNavigatorProcessList call s:TmuxNavigatorProcessList()
 
diff --git a/vim-tmux-navigator.tmux b/vim-tmux-navigator.tmux
index 7eebd6b..e5823b8 100755
--- a/vim-tmux-navigator.tmux
+++ b/vim-tmux-navigator.tmux
@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 
-is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
-    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
+is_vim="ps -a |grep -qE '.*''#{s|/dev/||:pane_tty}'' .*+(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
 tmux bind-key -n C-h if-shell "$is_vim" "send-keys C-h"  "select-pane -L"
 tmux bind-key -n C-j if-shell "$is_vim" "send-keys C-j"  "select-pane -D"
 tmux bind-key -n C-k if-shell "$is_vim" "send-keys C-k"  "select-pane -U"