diff --git a/internal/cli/root.go b/internal/cli/root.go
index cce2dc3..2dceddc 100644
--- a/internal/cli/root.go
+++ b/internal/cli/root.go
@@ -167,7 +167,7 @@ func init() {
 	// Global flags
 	rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "V", false, "Verbose logging")
 	rootCmd.PersistentFlags().BoolVarP(&dry, "dry", "d", false, "Dry run (log commands, don't execute)")
-	rootCmd.PersistentFlags().BoolVarP(&background, "background", "b", false, "Create session in background without attaching")
+	rootCmd.PersistentFlags().BoolVarP(&background, "background", "B", false, "Create session in background without attaching")
 	rootCmd.Flags().BoolP("version", "v", false, "Print version")
 
 	// Add subcommands