diff --git a/README.md b/README.md
index 1c3de3d..ced612a 100644
--- a/README.md
+++ b/README.md
@@ -176,7 +176,7 @@ set -g @thumbs-regexp-5 Vlan\\d+ # alternative method of defining regexp
 
 ### @thumbs-command
 
-`default: 'tmux set-buffer {} && tmux display-message \"Copied {}\"'`
+`default: 'tmux set-buffer -- {} && tmux display-message \"Copied {}\"'`
 
 Choose which command execute when you press a hint. `tmux-thumbs` will replace `{}` with the picked hint.
 
@@ -188,7 +188,7 @@ set -g @thumbs-command 'echo -n {} | pbcopy'
 
 ### @thumbs-upcase-command
 
-`default: 'tmux set-buffer {} && tmux paste-buffer && tmux display-message \"Copied {}\"`
+`default: 'tmux set-buffer -- {} && tmux paste-buffer && tmux display-message \"Copied {}\"'`
 
 Choose which command execute when you press a upcase hint. `tmux-thumbs` will replace `{}` with the picked hint.
 
diff --git a/src/swapper.rs b/src/swapper.rs
index 49da403..aff33e1 100644
--- a/src/swapper.rs
+++ b/src/swapper.rs
@@ -511,13 +511,13 @@ fn app_args<'a>() -> clap::ArgMatches<'a> {
       Arg::with_name("command")
         .help("Pick command")
         .long("command")
-        .default_value("tmux set-buffer {} && tmux display-message \"Copied {}\""),
+        .default_value("tmux set-buffer -- {} && tmux display-message \"Copied {}\""),
     )
     .arg(
       Arg::with_name("upcase_command")
         .help("Upcase command")
         .long("upcase-command")
-        .default_value("tmux set-buffer {} && tmux paste-buffer && tmux display-message \"Copied {}\""),
+        .default_value("tmux set-buffer -- {} && tmux paste-buffer && tmux display-message \"Copied {}\""),
     )
     .arg(
       Arg::with_name("osc52")