diff --git a/tmux.conf b/tmux.conf
index f229429..a3f7c84 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -138,6 +138,13 @@ bind -n C-u if-shell "$is_vim" "send-keys C-u" "select-pane -U"
 bind -n C-h if-shell "$is_vim" "send-keys C-h" "select-pane -L"
 bind -n C-j if-shell "$is_vim" "send-keys C-j" "select-pane -D"
 bind -n C-k if-shell "$is_vim" "send-keys C-k" "select-pane -R"
+# Copy-mode has its own key table, where stock tmux turns these keys into text
+# navigation (C-h cursor-left, C-u halfpage-up, C-j copy). Arrows do that job;
+# the four keys keep switching panes there too.
+bind -T copy-mode-vi C-u select-pane -U
+bind -T copy-mode-vi C-h select-pane -L
+bind -T copy-mode-vi C-j select-pane -D
+bind -T copy-mode-vi C-k select-pane -R
 
 bind Escape copy-mode                              # bind vi-like 'normal' mode
 bind -Tcopy-mode-vi 'v' send -X begin-selection    # bind vi-like visual mode