diff --git a/main.rkt b/main.rkt
index 96a6c18..276d1c8 100644
--- a/main.rkt
+++ b/main.rkt
@@ -159,7 +159,7 @@
 
 (define-syntax (sl-def-log stx)
   (syntax-case stx (log-callbacks)
-    ((_ id parent prefix)
+    ((_ id prefix parent)
      (with-syntax ([receiver (format-id #'id "receiver-~a" #'prefix)]
                    [dbg-name (format-id #'id "dbg-~a" #'prefix)]
                    [info-name (format-id #'id "info-~a" #'prefix)]
@@ -170,11 +170,11 @@
        #'(def-log2 id parent receiver log-callbacks dbg-name info-name warn-name err-name fatal-name)
        )
      )
-    ((_ id parent)
-     #'(sl-def-log id parent id)
+    ((_ id name)
+     #'(sl-def-log id name #f)
      )
     ((_ id)
-     #'(sl-def-log id #f id)
+     #'(sl-def-log id id #f)
      )
     )
   )
diff --git a/scrbl/simple-log.scrbl b/scrbl/simple-log.scrbl
index 2ac62ba..8ea1e8a 100644
--- a/scrbl/simple-log.scrbl
+++ b/scrbl/simple-log.scrbl
@@ -15,8 +15,8 @@ registered callbacks.
 @defmodule["simple-log"]
 
 @defform*[((sl-def-log id)
-           (sl-def-log id parent)
-           (sl-def-log id parent prefix))]{
+           (sl-def-log id name)
+           (sl-def-log id name parent))]{
 
 Defines a logger with topic @racket['id] and creates:
 
@@ -28,7 +28,7 @@ Defines a logger with topic @racket['id] and creates:
  @item{@racket[fatal-id]}
 ]
 
-Note. If prefix is given, id @racket[dbg-prefix], etc. will be generated instead of @racket[dbg-id], etc.
+Note. If name is given, id @racket[dbg-prefix], etc. will be generated instead of @racket[dbg-id], etc.
 
 Each procedure has shape:
 
@@ -39,7 +39,7 @@ Each procedure has shape:
 The message is formatted via @racket[format] and emitted with a timestamp
 (@litchar{YYYY-MM-DDTHH:MM:SS}) and topic @racket['id].
 
-If @racket[parent] is omitted, the current logger is used.
+If @racket[parent] is omitted, the @racket[#f] is used as "parent logger".
 
 A background thread is started that receives log events and forwards them
 to the registered callbacks.
@@ -151,4 +151,4 @@ creates:
 @defproc[#:link-target? #f
  (fatal-my-module [msg string?] [arg any/c] ...) void?]{Fatal log.}
 
-All use @racket[format] and emit asynchronously.
\ No newline at end of file
+All use @racket[format] and emit asynchronously.