How do I scroll in tmux using the mouse?

I'm using tmux 1.8 on Mac OS X 1.9.3 in the Terminal.app with an Apple magic mouse. I'm also using oh-my-zsh. I can't scroll at all with the mouse when tmux is running. It just scrolls the whole terminal window up which goes beyond the output of tmux. I've tried these settings in the tmux.conf file but nothing works: ``` set -g mode-mouse on setw -g mode-mouse on set -g terminal-overrides 'xterm*:smcup@:rmcup@' ``` I made sure to reload the tmux.conf and also killed a sessions and created new ones just to make sure. And it still doesn't work. Please help. Here is my entire tmux.conf ``` set -g default-terminal "xterm-256color" set -g history-limit 10000 set -g status-interval 60 # status config set -g status-utf8 on set -g status-position top set -g status-fg colour15 set -g status-bg colour24 # status line left side set -g status-left-length 40 set -g status-left "#[fg=colour214,bold] #S #[fg=colour45] " # status line right side set -g status-right "#(~/.dotfiles/bin/tmux_battery_status) | %I:%M %p | %D " # no more machine counting set -g base-index 1 setw -g pane-base-index 1 # enable activity alerts setw -g monitor-activity on set -g visual-activity on # window list colors setw -g window-status-fg colour250 setw -g window-status-bg default setw -g window-status-format " #I #W " setw -g window-status-current-format "  #W " setw -g window-status-current-fg colour118 setw -g window-status-current-bg default setw -g window-status-activity-attr underscore,bold # center the window list set -g status-justify left # pane colors set -g pane-border-fg colour24 set -g pane-border-bg default set -g pane-active-border-fg colour15 set -g pane-active-border-bg colour15 # command / message line colors set -g message-fg colour15 set -g message-bg black set -g message-attr bright # rebind clear screen with Ctrl-l bind C-l send-keys 'C-l' # reload tmux conf bind r source-file ~/.tmux.conf \; display "Reloaded tmux.conf!" # setup reattach-to-user-namespace for copy and paste set-option -g default-command "reattach-to-user-namespace -l $SHELL" # use vim keybindings in copy mode setw -g mode-keys vi setw -g mode-mouse on setw -g mouse-utf8 on setw -g mouse-select-pane on setw -g mouse-select-window on setw -g mouse-resize-pane on # setup 'v' to begin selection as in vim bind -t vi-copy v begin-selection bind -t vi-copy y copy-pipe "reattach-to-user-namespace pbcopy" # update default binding of 'enter' to also use copy-pipe unbind -t vi-copy Enter bind -t vi-copy enter copy-pipe "reattach-to-user-namespace pbcopy" # splitting panes bind | split-window -h bind - split-window -v # fast resizing (-r for repeatable) bind -r h resize-pane -L 5 bind -r j resize-pane -D 5 bind -r k resize-pane -U 5 bind -r l resize-pane -R 5 # tmux navigator with vim (-n allows binding without tmux prefix) bind -n C-h run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim(diff)?$' && tmux send-keys C-h) || tmux select-pane -L" bind -n C-j run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim(diff)?$' && tmux send-keys C-j) || tmux select-pane -D" bind -n C-k run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim(diff)?$' && tmux send-keys C-k) || tmux select-pane -U" bind -n C-l run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim(diff)?$' && tmux send-keys C-l) || tmux select-pane -R" bind -n C-\ run "(tmux display-message -p '#{pane_current_command}' | grep -iqE '(^|\/)vim(diff)?$' && tmux send-keys 'C-\\') || tmux select-pane -l" ```