diff --git a/.gitmodules b/.gitmodules
index bd5347d..9960d15 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "vendor/tmux-mem-cpu-load"]
 	path = vendor/tmux-mem-cpu-load
-	url = git://github.com/thewtex/tmux-mem-cpu-load.git
+	url = https://github.com/thewtex/tmux-mem-cpu-load.git
diff --git a/.tmux.conf b/.tmux.conf
index c1925b4..a06ef34 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -74,6 +74,9 @@ bind-key C command-prompt -p "Name of new window: " "new-window -n '%%'"
 # reload config
 bind r source-file ~/.tmux.conf \; display-message "Config reloaded..."
 
+## broadcast input
+bind-key l set-option -w synchronize-panes
+
 # auto window rename
 set-window-option -g automatic-rename