diff --git a/cmd/root.go b/cmd/root.go
index 1dacfd6..e30ceb3 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -152,6 +152,10 @@ func NewCmdRoot() *cobra.Command {
 	rootCmd.AddCommand(NewCmdConfig())
 	rootCmd.AddCommand(NewCmdSecrets())
 
+	if _, ok := os.LookupEnv("SMALLWEB_DISABLE_COMPLETIONS"); ok {
+		rootCmd.CompletionOptions.DisableDefaultCmd = true
+	}
+
 	if env, ok := os.LookupEnv("SMALLWEB_DISABLED_COMMANDS"); ok {
 		disabledCommands := strings.Split(env, ",")
 		for _, commandName := range disabledCommands {