diff --git a/shell/tmux/.tmux.conf b/shell/tmux/.tmux.conf
index 8c8f38eb..df913aab 100644
--- a/shell/tmux/.tmux.conf
+++ b/shell/tmux/.tmux.conf
@@ -2,7 +2,6 @@
 
 set -g default-terminal screen-256color
 set -g default-shell $SHELL
-set -g default-command $SHELL
 set -s quiet on
 set -s focus-events on
 # increase scrollback buffer size
@@ -176,9 +175,6 @@ bind -t vi-copy Escape cancel
 bind -t vi-copy H start-of-line
 bind -t vi-copy L end-of-line
 
-# copy to Mac OSX pasteboard
-if -b 'type -p reattach-to-user-namespace > /dev/null 2>&1' 'bind y run "tmux save-buffer - | reattach-to-user-namespace pbcopy"'
-
 
 # -- THEME -------------------------------
 
diff --git a/shell/tmux/.tmux/osx.conf b/shell/tmux/.tmux/osx.conf
index 7917ccae..23c04801 100755
--- a/shell/tmux/.tmux/osx.conf
+++ b/shell/tmux/.tmux/osx.conf
@@ -1,2 +1,3 @@
 
-set -g default-command "reattach-to-user-namespace -l zsh"
+# copy to Mac OSX pasteboard
+if -b 'type -p reattach-to-user-namespace > /dev/null 2>&1' 'bind y run "tmux save-buffer - | reattach-to-user-namespace pbcopy"'