diff --git a/syndicate/syntax.rkt b/syndicate/syntax.rkt
index 3128932..8491a40 100644
--- a/syndicate/syntax.rkt
+++ b/syndicate/syntax.rkt
@@ -106,6 +106,8 @@
 
 (define-syntax (spawn stx)
   (syntax-parse stx
+    [(_ name:<name> daemon:<daemon?>)
+     (raise-syntax-error #f "Need body in spawn")]
     [(_ name:<name> daemon:<daemon?> setup-expr ...)
      #'(turn-spawn! #:name name.N
                     #:daemon? daemon.D